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  - 1
    - ADO.NET and SQL Server Data Paging I had to built a custom data paging control for my asp.net app and SQL Server. This is what I'm doing: 1. do a SELECT to a SqlDataReader 2. create a DataTable with data from GetSchema() 3. loop trough the datareader using .Read() to the point I want to start 4. add data to DataTable with max of [pageSize] records 5. close the data reader and return The question is: Isn't looping reader.Read() doing nothing to go to start point where I want start getting data too expensive? Although DataReader is fast, won't ".Read()" get the row data from the server to the client? If so, if I need to get data from record 10000 ahead, it is actually reading all 10 thousand rows of data, so it is a big waste of resources. Maybe someone who knows more about the internals of the DataReader can answer this. Since SQL Server doesn't support "LIMIT" like keywords, if there is a better way to page data in sql server, I would like to know. Thanks. Tag: Icon in the tray for a service app Tag: 101297
  - 2
    - Implementing / using the IExpando interface Guys, Does anyone know much about the IExpando interface? I have a business object I've created and I'd like to add support for methods / attributes at runtime so that scripting clients ( e.g. ASP / VBScript / Java script ) can call the .NET object through a RCW and invoke methods which are added at runtime. Do I need to inherit my .NET class from IExpando and implement methods such as AddMethod. Are these called by the scripting engine to resolve methods which don't exist. e.g. assume a query class contains methods such as Save however a method Resolve needs to be added at runtime so I can write code such as oQuery.Resolve. Cheers Matt Tag: Icon in the tray for a service app Tag: 101290
  - 3
    - SQL + Dreamweaver Hello, I seem to be running into a problem with regards to data size etc: Explanation: A person opens a .aspx page and posts and writes an article of a few thousand words. When they click Insert Record they get this message: System.Data.SqlClient.SqlException: String or binary data would be truncated. The statement has been terminated. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at DreamweaverCtrls.DataSet.DoInit() Problem: It's to do with the size of the data being inserted into the record and I have increased the VarChar length to 6000 characters to compensate. Is there a better DataType to hold the information? With MS Access this is a major problem but I would expect that but not with SQL Server? Any suggestions? Tag: Icon in the tray for a service app Tag: 101288
  - 4
    - Determining the path to the .NET framework Is there a canonical way to determine the path to the folder where the runtime environment is installed? The reason I am asking is that I have created a small Office Add-In in C# which needs to be registered as a COM component using regasm.exe during installation. So I need a way for the install script (the Add-In is only a part of a larger project which does not use the default Microsoft installer) to find the regasm, since it is not in the path by default. Tag: Icon in the tray for a service app Tag: 101284
  - 5
    - Drag and Drop Question I've been looking around for info on this, but not finding much. What I'm trying to do is allow a user to drag and drop objects between two forms in my app. The objects are classes that I've built and I want the target form to be able to recognize what kind of type is being dragged over it and dropped. From what I could tell from the MSDN docs, I apparently need to add a custom dataformat type to the existing list, and/or to register a new data type in the registry. Can anyone explain exactly how I need to do this, or point me to a tutorial somewhere? I'm pretty stuck on this one. Thanks! Tag: Icon in the tray for a service app Tag: 101280
  - 6
    - Collection - DataStructure. hi, We have 1 lakh records with row size 3kb These records are palced by a service and another service will pickup these records and process. Because of this a huge burgen is there on the server and it has to do very fast hence, we decided to put this in ram itself. Can anyone suggest the best datastructure to this ASAP. Thanks in Advance, Prasad Dannani Tag: Icon in the tray for a service app Tag: 101279
  - 7
    - How to position message box? How to position message box programatically using C# .NET? Thanks. Tag: Icon in the tray for a service app Tag: 101268
  - 8
    - input string not in correct format I am gettign this error, while migration an app to asp.net Exception Details: System.FormatException: Input string was not in a correct format. Source Error: Line 19: Dim enddate = request.QueryString("enddate") Line 20: Line 21: if cint(eventid) = "0" then Line 22: searchtype = 0 Line 23: else Source File: C:\Documents and Settings\amit\WebSite1\reports\loc_summary_calc.aspx Line: 21 Stack Trace: [FormatException: Input string was not in a correct format.] Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat) +216 Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +91[InvalidCastException: Conversion from string "ns" to type 'Integer' is not valid.] Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +247 Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(Object Value) +988 ASP.loc_summary_calc_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\Documents and Settings\amit\WebSite1\reports\loc_summary_calc.aspx:21 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +98 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20 System.Web.UI.Page.Render(HtmlTextWriter writer) +27 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +53 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +278 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +24The code isdim eventid, subeventid, cyear, searchalleventeventid = request.QueryString("VIOSel1")subeventid = request.QueryString("subvioSel1")cyear = request.QueryString("cyear")searchallevent = request.QueryString("searchall")Dim startdate = request.QueryString("startdate")Dim enddate = request.QueryString("enddate") System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8937 The code is as follows, <% dim searchtype '0 - search all zone '1 - search by zone '2 - search by location dim eventid, subeventid, cyear, searchallevent eventid = request.QueryString("VIOSel1") subeventid = request.QueryString("subvioSel1") cyear = request.QueryString("cyear") searchallevent = request.QueryString("searchall") Dim startdate = request.QueryString("startdate") Dim enddate = request.QueryString("enddate") if cint(eventid).ToString() = 0 then searchtype = 0 else if cint(subeventid) = 0 then searchtype = 1 else searchtype = 2 end if end if Dim Command1__startdate Command1__startdate = startdate Dim Command1__enddate Command1__enddate = enddate %> Tag: Icon in the tray for a service app Tag: 101267
  - 9
    - syntax error in update statement in vb.net HI i am getting the foll error while conv an asp application to asp.net Exception Details: System.Runtime.InteropServices.COMException: Syntax error in UPDATE statement. Source Error: Line 112: MM_editCmd.ActiveConnection = MM_editConnection Line 113: MM_editCmd.CommandText = MM_editQuery Line 114: MM_editCmd.Execute Line 115: MM_editCmd.ActiveConnection.Close Line 116: Source File: C:\Documents and Settings\amit\WebSite1\edit_location.aspx Line: 114 Stack Trace: [COMException (0x80040e14): Syntax error in UPDATE statement.] Microsoft.VisualBasic.CompilerServices.LateBinding.InternalLateCall(Object o, Type objType, String name, Object[] args, String[] paramnames, Boolean[] CopyBack, Boolean IgnoreReturn) +776 Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateCall(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack, Boolean IgnoreReturn) +193987 ASP.edit_location_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\Documents and Settings\amit\WebSite1\edit_location.aspx:114 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +98 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20 System.Web.UI.Page.Render(HtmlTextWriter writer) +27 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +53 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +280 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +24 The code whre the statement was declared is as follows, <% ' *** Update Record: construct a sql update statement and execute it If (Trim(Request("MM_update")) <> "" And Trim(Request("MM_recordId")) <> "") Then ' create the sql update statement MM_editQuery = "update " & MM_editTable & " set " For MM_i = LBound(MM_fields) To UBound(MM_fields) Step 2 MM_formVal = MM_fields(MM_i+1) MM_typeArray = Split(MM_columns(MM_i+1),",") MM_delim = MM_typeArray(0) If (MM_delim = "none") Then MM_delim = "" MM_altVal = MM_typeArray(1) If (MM_altVal = "none") Then MM_altVal = "" MM_emptyVal = MM_typeArray(2) If (MM_emptyVal = "none") Then MM_emptyVal = "" If (MM_formVal = "") Then MM_formVal = MM_emptyVal Else If (MM_altVal <> "") Then MM_formVal = MM_altVal ElseIf (MM_delim = "'") Then ' escape quotes MM_formVal = "'" & Replace(MM_formVal,"'","''") & "'" Else MM_formVal = MM_delim + MM_formVal + MM_delim End If End If If (MM_i <> LBound(MM_fields)) Then MM_editQuery = MM_editQuery & "," End If MM_editQuery = MM_editQuery & MM_columns(MM_i) & " = " & MM_formVal Next MM_editQuery = MM_editQuery & " where " & MM_editColumn & " = " & MM_recordId If (Not MM_abortEdit) Then ' execute the update MM_editCmd = Server.CreateObject("ADODB.Command") MM_editCmd.ActiveConnection = MM_editConnection MM_editCmd.CommandText = MM_editQuery MM_editCmd.Execute MM_editCmd.ActiveConnection.Close If (MM_editRedirectUrl <> "") Then Response.Redirect(MM_editRedirectUrl) End If End If End If %> Tag: Icon in the tray for a service app Tag: 101266
  - 10
    - syntax error in query expression in vb.net I am geting the following error while conv an asp to asp.net Exception Details: System.Runtime.InteropServices.COMException: Syntax error in query expression 'id =System.__ComObject'. Source Error: Line 196: for i = 0 to ubound(emaillist) Line 197: selectsqlstatement = "select * from tblusers where id =" & emaillist(i) Line 198: rs_email = conn.execute(selectsqlstatement) Line 199: tolist = tolist & rs_email("email") & ";" Line 200: Source File: C:\Documents and Settings\amit\WebSite1\email_form.aspx Line: 198 Stack Trace: [COMException (0x80040e14): Syntax error in query expression 'id =System.__ComObject'.] Microsoft.VisualBasic.CompilerServices.LateBinding.LateGet(Object o, Type objType, String name, Object[] args, String[] paramnames, Boolean[] CopyBack) +965 Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack) +193727 ASP.email_form_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\Documents and Settings\amit\WebSite1\email_form.aspx:198 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +98 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20 System.Web.UI.Page.Render(HtmlTextWriter writer) +27 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +53 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +280 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +24 The code for teh foll is, <% Dim counter,rs_email, tolist Dim emaillist as string() dim i as integer emaillist = split(request.Form("c"), ",") counter = 1 dim selectSqlStatement as string for i = 0 to ubound(emaillist) selectsqlstatement = "select * from tblusers where id =" & emaillist(i) rs_email = conn.execute(selectsqlstatement) tolist = tolist & rs_email("email") & ";" response.Write(rs_email("email")&";") if counter = 3 then response.Write("<br>") counter = 1 end if counter = counter + 1 next %> Tag: Icon in the tray for a service app Tag: 101265
  - 11
    - type mismatch error I am getting teh following error while converting an asp application to asp.net, Exception Details: System.Runtime.InteropServices.COMException: Type mismatch. Source Error: Line 347: 'response.Write(sql2) Line 348: rs_getAlarmCount = Server.CreateObject("ADODB.Recordset") Line 349: rs_getAlarmCount.ActiveConnection = MM_rs_PAVE_CC_1_STRING Line 350: rs_getAlarmCount.Source = sql Line 351: rs_getAlarmCount.CursorType = 0 Source File: C:\Documents and Settings\amit\WebSite1\reports\campusfiresafetyreport.aspx Line: 349 Stack Trace: [COMException (0x80020005): Type mismatch.] Microsoft.VisualBasic.CompilerServices.LateBinding.InternalLateSet(Object o, Type& objType, String name, Object[] args, String[] paramnames, Boolean OptimisticSet, CallType UseCallType) +2138 Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateSet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean OptimisticSet, Boolean RValueBase, CallType CallType) +180 Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateSet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments) +33 ASP.campusfiresafetyreport_aspx.getAlarmCount(Object location, Object alarmtype, Object thisyear) in C:\Documents and Settings\amit\WebSite1\reports\campusfiresafetyreport.aspx:349 ASP.campusfiresafetyreport_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\Documents and Settings\amit\WebSite1\reports\campusfiresafetyreport.aspx:249 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +98 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20 System.Web.UI.Page.Render(HtmlTextWriter writer) +27 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +53 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +280 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +24 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8878 The code is as follows, where the error occurs, <Script type="VB" runat="Server"> function getAlarmCount(location, alarmtype, thisyear) Dim sql = " SELECT COUNT(*) AS realalarmcount " & _ "FROM (tblEvent INNER JOIN tblEvent_type ON tblEvent.case_no = tblEvent_type.case_no) " & _ "WHERE (tblEvent_type.event_type_id = "& alarmtype &") " & _ " AND (tblEvent.date_of_event > '1/1/"& thisyear &"' and tblEvent.date_of_event < '12/31/"& thisyear &"' ) " if location <> "0" then sql = sql & " AND (tblEvent.location = "& location &") " end if 'response.Write(sql2) rs_getAlarmCount = Server.CreateObject("ADODB.Recordset") rs_getAlarmCount.ActiveConnection = MM_rs_PAVE_CC_1_STRING rs_getAlarmCount.Source = sql rs_getAlarmCount.CursorType = 0 rs_getAlarmCount.CursorLocation = 2 rs_getAlarmCount.LockType = 1 rs_getAlarmCount.Open() alarmcount = rs_getAlarmCount("realalarmcount") 'response.Write(alarmcount) rs_getAlarmCount.Close() rs_getAlarmCount = Nothing getAlarmCount = alarmcount end function </Script> Tag: Icon in the tray for a service app Tag: 101264
  - 12
    - Monitor.Wait, with timeout This is a multi-part message in MIME format. --------------974C23208E5F277BA99B9297 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit The (beta 2) dox say "The time-out ... moves the thread to the ready queue, bypassing other threads ahead of it in the wait queue, so that it can reacquire the lock sooner." To me, this directly states that when I Pulse a locked object that has threads waiting, a thread that is waiting with a timeout will be moved to the ready queue ahead of a thread that is waiting without a timeout. It also rather strongly implies that a thread that is about to timeout will get priority ahead of a thread that is willing to wait longer. Yet, the attached program wakes waiting threads in creation order, exactly as if a Pulse or PulseAll simply moved threads from the waiting queue to the ready queue in the order that they entered the waiting queue. (Run the console app from a DOS box ...) Are the dox wrong, or am I misinterpreting my test program? -- www.midnightbeach.com --------------974C23208E5F277BA99B9297 Content-Type: text/plain; charset=us-ascii; name="Program.cs" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="Program.cs" using System; using System.Threading; namespace WaitPriorities { class Program { static void Main(string[] args) { object Lock = new object(); new Thread(new ParameterizedThreadStart(NoTimeout)).Start(Lock); new Thread(new ParameterizedThreadStart(LongTimeout)).Start(Lock); new Thread(new ParameterizedThreadStart(ShortTimeout)).Start(Lock); //lock (Lock) // Monitor.PulseAll(Lock); lock (Lock) Monitor.Pulse(Lock); lock (Lock) Monitor.Pulse(Lock); lock (Lock) Monitor.Pulse(Lock); } static void NoTimeout(object Lock) { lock (Lock) { Monitor.Wait(Lock); Console.WriteLine("NoTimeout"); } } static void ShortTimeout(object Lock) { lock (Lock) { bool Locked = Monitor.Wait(Lock, 1000); Console.WriteLine("ShortTimeout ({0})", Locked ? "Locked" : "Not locked"); } } static void LongTimeout(object Lock) { lock (Lock) { bool Locked = Monitor.Wait(Lock, 1500); Console.WriteLine("LongTimeout ({0})", Locked ? "Locked" : "Not locked"); } } } } --------------974C23208E5F277BA99B9297-- Tag: Icon in the tray for a service app Tag: 101257
  - 13
    - Is serialport functional in beta2 on .NET CF? We're trying to do serial comm with the new serialport object in the VS Beta 2/.NET Beta 2 system (using C#, but I don't think that's terribly important). I'm using a slightly cranky GPS receiver, and it works fairly well under Windows, but when hangs hard in the PocketPC 2003 emulator, and on an actual iPaq handheld. Does anyone have a SIMPLE code snippet that works for serial comm for them under the Compact Framework? serPort.ReadLn() or similar would be sufficient. I'd like to see if it's our device, or the serialport object, or improper use of serialport, etc. Many thanks in advance! --Larry Tag: Icon in the tray for a service app Tag: 101251
  - 14
    - A Question about Control.Invoke I have a code sequence that goes something like this: 1. Start an asynchronous i/o with a completion callback of /cb/ Now when the i/o completes we end up in the /cb/ routine.... note that we are in a pool thread during the callback, not the main form's thread. 2. call the Endxxxx(ar) to retrieve the results of the operation 3. form.Invoke(delegate method, params) 4. do another asynchronous i/o for more data At step 3 we call Invoke to switch to the main form's thread and pass it some data. This is necessary since doing anything with form's controls outside its main thread is not safe. My question is what is Invoke doing under the covers? Does it just launch the delegate with the equivalent of a PostMessage or PostThreadMessage and return straightaway so we can get the next i/o started at step (4), or is step (4) not executed until the delegate method (and any routines it calls in turn) in step (3) completed? I can change Invoke to BeginInvoke if that is what is required. Regards, Oz -- A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing on usenet and in e-mail? Tag: Icon in the tray for a service app Tag: 101250
  - 15
    - Application.Run not creating Main Form Sometimes my main form appears and sometimes it doesn't. VS.NET acts as if the process is running and I can click the "stop" button but I get no windows or forms. Here is my code: static void Main() { try{ MainForm frm = new MainForm(); Application.Run( frm ); } catch( System.Exception ex ){ MessageBox.Show( ex.Message ); } } When I debug it, the MainForm constructs just fine but when the execution enters Application.Run( ), the OnLoad event in never called and the window doesn't appear. Then I run it again and it works fine, and I run it again and it doesn't. Does anybody have any ideas about how I can figure out what the problem is. thanks, Dean Rettig Tag: Icon in the tray for a service app Tag: 101243
  - 16
    - Implementing a namespace over more than one assembly? Hi all, Can anyone tell me if it is advisable (or even possible) to define a namespace across 2 or more assemblies? For example, consider the namespace SampleApplication.Data.Providers Would it be possible to have assembly A define a class as part of that namespace as well as Assembly B also declaring a class to be within it as well? In particular, I have a number of data providers. It would be useful (I think) to declare them in the same namespace, but for the purposes of a demonstration I'm doing, each provider must exisit in its own seperately deployed assembly. Is this possible and is it a good idea? Thanks to anyone who can share some advice! :-) Kindest Regards tce Tag: Icon in the tray for a service app Tag: 101240
  - 17
    - Delphi 4 & VB.NET, don't play nice?? Hello all, Im stumpped. I have a small app i wrote in VB.NET which takes in a file name, and a bunch of other params, runs the file with the params, and then exits. At the end of the program, it can optionally echo back all the params it received in a msgbox. When the app is run from a command-line, it works beautifully. The report runs, then when you close it, the msgbox pops up with the params that were passed into my launcher program. HOWever.... we have another application, written in Delphi 4, which attempts to run the same command line as we tried running manually. When it is run from the Delphi app, the msgbox with the params never pops up. The Delphi app is shelling out to my app using the delphi command WinExec(). Is there some weird interaction between Delphi 4 and VB.NET or the .NET framework in general, that would prevent this msgbox from showing up??? Im truly stumpped, and really need to figure a way to get around this. Thanks in advance, - Arthur Dent. Tag: Icon in the tray for a service app Tag: 101238
  - 18
    - Transparency, ASP.NET, and GDI+ I am trying to create graphics with GDI+ that include transparency. However, the transparency never seems to show up, even though my colors have an alpha value of 0. How can I generate a graphic that is completely transparent in certain areas (so that the web page background shows through)? I save my graphics as gif files. I would appreciate, if possible, a simple example so that I can see the code. Thanks. -- Nathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/ Tag: Icon in the tray for a service app Tag: 101236
  - 19
    - How to shut down my windows service Hello. I've created a windows service application. I am also creating a UI for it. I want to add a "Stop Service" button in my UI app, but am unsure how to code the shut down within the service app. Call Dispose()? Thanks in advance, Mike Tag: Icon in the tray for a service app Tag: 101235
  - 20
    - Can't get IIS to run ASP 1.1 Every time I open up a web application in Visual Studio, I get the following error message: Visual Studio .NET has detected that the specified web server is not running ASP.NET version 1.1. You will be unable to run ASP.NET Web applications or services. Not surprisingly, I'm unable to run any of my ASP.NET web applications. Every time I try to open one of my application's web forms in IE or Firefox, the browser wants to open the file with Visual Studio, which I think is symptomatic of the ASP.NET engine not bothering to generate the appropriate web pages dynamically. However, I believe that I do have ASP.NET 1.1 installed -- it's listed (along with ASP.NET 1.0) in my Add/Remove Programs control panel, for example. Does anybody have some ideas of how I can get my applications running? Thanks a lot, Jay Tag: Icon in the tray for a service app Tag: 101233
  - 21
    - process.WaitForExit() problem on framework 2.0 beta Hello I have a programm that executes other processes. Everything was fine with framework 1.1. Now i have tested the assembly (still build with VS2003, framework 1.1) on the framework 2.0 beta. Unfortunatly in some cases, the method "process.WaitForExit()" waits infinite. When the process exits, it does not affect the WaitForExit method. If i replace the WaitForExit method with an interop call to kernel32.dll -> WaitForSingleObject it works perfectly again. Berni [System.Runtime.InteropServices.DllImport("kernel32.dll")] private static extern int WaitForSingleObject(IntPtr hHandle, uint dwMilliseconds); ... //this.process.WaitForExit(); WaitForSingleObject(this.process.Handle, 0xFFFFFFFF); Tag: Icon in the tray for a service app Tag: 101231
  - 22
    - Inserting/Adding objects to Collections Hello I am trying read from a xml file, pull the values in a object and then add the object to an ArrayList. I am using a 'while' loop to move through each node in the xml file and pulling the required values as needed and setting them to the relevant property within my object. The reading of the xml file works as it should. I get a problem when I try to add the object that I created to the arraylist. It seems to be adding each one, but when I view the results of the list, it shows the last object passed in for each object stored within the Arraylist. Here is the code that is giving me issues: public ArrayList readXMLClient(string path, string xPathEx) { XmlDocument document = new XmlDocument(); document.Load(path); XPathNavigator navigator = document.CreateNavigator(); int i = document.DocumentElement.ChildNodes.Count; int j = 0; ClientData objClientData = new ClientData(); ArrayList objArrayList = new ArrayList(); try { XPathNodeIterator _clientCode = navigator.Select(xPathEx + "/ClientCode"); XPathNodeIterator _clientName = navigator.Select(xPathEx + "/ClientName"); XPathNodeIterator _clientDetails = navigator.Select( xPathEx + "/ClientDetails"); while (_clientCode.MoveNext() && _clientName.MoveNext() && _clientDetails.MoveNext()) { objClientData.clientCode = _clientCode.Current.Value.ToString(); objClientData.clientName = _clientName.Current.Value.ToString(); objClientData.clientDetails = _clientDetails.Current.Value.ToString(); objArrayList.Insert(j,objClientData); j++; } } catch(Exception ex) { } return objArrayList; } Any help would be great. Thanking you in advance Vish Tag: Icon in the tray for a service app Tag: 101225
  - 23
    - Too many pending asynchronous disk write causes spurious errors I am using the asynchronous I/O model to receive data over a socket, and asynchronously write the incoming data to a disk file using FileStream. So long as the pending writes have not yet completed I continue to allocate more read buffers. As a result I can get a backlog of about 250 disk writes (1K buffers, because that is the max size the receiver will give me). During the course of a 50 MB transfer I get about 6 of these errors: 07:42:50.14 System.IndexOutOfRangeException: Probable I/O race condition detected while copying memory. The I/O package is not thread safe by default. In multithreaded applications, a stream must be accessed in a thread-safe way, such as a thread-safe wrapper returned by TextReader's or TextWriter's Synchronized methods. This also applies to classes like StreamWriter and StreamReader. 07:42:50.14 at System.Buffer.InternalBlockCopy(Array src, Int32 srcOffset, Array dst, Int32 dstOffset, Int32 count) 07:42:50.14 at System.IO.FileStream.BeginWrite(Byte[] array, Int32 offset, Int32 numBytes, AsyncCallback userCallback, Object stateObject) 07:42:50.14 at ODP.NMServe.DataChannelSession.ReceiveHandler(IAsyncResult ar) I am obviously doing SOMETHING wrong. I was thinking the FileSystem.BeginWrite was supposed to be safe to work from in the thread pool utilized by the socket read completions. And that there was safe FIFO queueing of requests. The FileStream was opened with the asynchronous option TRUE. I am not sure what the error messages are looking for, what I need to change to avoid this. The disk I am writing to is an SCSI RAID 5 disk array. This runs on a dual processor W2K box. Thanks for any pointers Best regards - Lee Gillie Tag: Icon in the tray for a service app Tag: 101224
  - 24
    - Disk file write performance Seeking some hints from a real framework asynchronous I/O ru of gu. I am trying to find the absolute fastest way to write binary data to disk files in VB.NET. I am working on an FTP server. In my development testing I have found that I can receive about 60 mbits/sec over the socket data connection using asynchronous reads, with the file writing disabled. When I try to incorporate asynchronous disk writing with FileStream it bogs down to about 4.5 mbits/sec. So I start with only three, but I allocate extra data buffers as needed to keep feeding the socket reads as fast as the system will take them, and obviously not reuse the buffers until the asynchronous disk write completes, and I find my buffer pool grows to about 250 (i.e. up to 250 pending asynchronous disk writes at any one moment). I/O buffers are 1K each. File transfers are about 50 MB. Thanks for any pointers Best regards - Lee Gillie Tag: Icon in the tray for a service app Tag: 101222
  - 25
    - Exception on Machine Without Visual Studio .Net Installed I have created a mixed mode (managed + native) application that links to a mixed mode dll. It runs fine on all XP machines with Visual Studio .Net installed, but on other machines with the .Net framework installed but not Visual Studio, it displays a pop-up window entitled "Common Runtime Debugging Services," and the unhelpful message: "Application has generated an exception that could not be handled." This happens when the application gets to the managed-code wrapper of a function (C++) that initializes the dll (__crt_dll_initialize) . The error is triggered just before it enters the crt-initializing wrapper function. It won't display a message-box window placed within the function but before the initialization. Try-catch does not catch the error. Depends.exe show no missing or problematic module. The error also is triggered when 0 is assigned to a pointer to a managed class of the dll. Any suggestion would be appreciated. -- sunrat Tag: Icon in the tray for a service app Tag: 101220
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  - 1
    - Uninstall 2005 Beta 2 and reinstall 2003 Hi all, I've uninstalled Visual Studio .Net 2005 Beta 2 and need to reinstall Visual Studio .Net 2003 but I get an error that the .Net Framework 1.1 and J# redistributable packages cannot be installed. Is there a tool to clean up the mess the Beta leaves behind? Thanks, Ivan Tag: Icon in the tray for a service app Tag: 101219
  - 2
    - General GDI+ Error. I have the following code and when I use it to split a tiff file in seperate tiff files I receive a general gdi+ error. I have no clue what is going wrong. From http://www.codeproject.com/csharp/TiffManager.asp Code: using System; using System.IO; using System.Drawing; using System.Drawing.Imaging; using System.Collections; /// <summary> /// Summary description for TiffManager. /// </summary> public class TiffManager : IDisposable { private string _ImageFileName; private int _PageNumber; private Image image; private string _TempWorkingDir; public TiffManager(string imageFileName) { this._ImageFileName=imageFileName; image=Image.FromFile(_ImageFileName); GetPageNumber(); } public TiffManager() { } /// <summary> /// Read the image file for the page number. /// </summary> private void GetPageNumber() { Guid objGuid=image.FrameDimensionsList[0]; FrameDimension objDimension=new FrameDimension(objGuid); //Gets the total number of frames in the .tiff file _PageNumber=image.GetFrameCount(objDimension); return; } /// <summary> /// Read the image base string, /// Assert(GetFileNameStartString(@"c:\test\abc.tif"),"abc") /// </summary> /// <param name="strFullName"></param> /// <returns></returns> private string GetFileNameStartString(string strFullName) { int posDot=_ImageFileName.LastIndexOf("."); int posSlash=_ImageFileName.LastIndexOf(@"\"); return _ImageFileName.Substring(posSlash+1,posDot-posSlash-1); } /// <summary> /// This function will output the image to a TIFF file with specific compression format /// </summary> /// <param name="outPutDirectory">The splited images' directory</param> /// <param name="format">The codec for compressing</param> /// <returns>splited file name array list</returns> public ArrayList SplitTiffImage(string outPutDirectory,EncoderValue format) { string fileStartString=outPutDirectory+"\\"+GetFileNameStartString(_ImageFileName); ArrayList splitedFileNames=new ArrayList(); try { Guid objGuid=image.FrameDimensionsList[0]; FrameDimension objDimension=new FrameDimension(objGuid); //Saves every frame as a separate file. Encoder enc=Encoder.Compression; int curFrame=0; for (int i=0;i<_PageNumber;i++) { image.SelectActiveFrame(objDimension,curFrame); EncoderParameters ep=new EncoderParameters(1); ep.Param[0]=new EncoderParameter(enc,(long)format); ImageCodecInfo info=GetEncoderInfo("image/tiff"); //Save the master bitmap string fileName=string.Format("{0}{1}.TIF",fileStartString,i.ToString()); image.Save(fileName,info,ep); splitedFileNames.Add(fileName); curFrame++; } } catch (Exception) { throw; } return splitedFileNames; } /// <summary> /// This function will join the TIFF file with a specific compression format /// </summary> /// <param name="imageFiles">string array with source image files</param> /// <param name="outFile">target TIFF file to be produced</param> /// <param name="compressEncoder">compression codec enum</param> public void JoinTiffImages(string[] imageFiles,string outFile,EncoderValue compressEncoder) { try { //If only one page in the collection, copy it directly to the target file. if (imageFiles.Length==1) { File.Copy(imageFiles[0],outFile,true); return; } //use the save encoder Encoder enc=Encoder.SaveFlag; EncoderParameters ep=new EncoderParameters(2); ep.Param[0]=new EncoderParameter(enc,(long)EncoderValue.MultiFrame); ep.Param[1] = new EncoderParameter(Encoder.Compression,(long)compressEncoder); Bitmap pages=null; int frame=0; ImageCodecInfo info=GetEncoderInfo("image/tiff"); foreach(string strImageFile in imageFiles) { if(frame==0) { pages=(Bitmap)Image.FromFile(strImageFile); //save the first frame pages.Save(outFile,info,ep); } else { //save the intermediate frames ep.Param[0]=new EncoderParameter(enc,(long)EncoderValue.FrameDimensionPage); Bitmap bm=(Bitmap)Image.FromFile(strImageFile); pages.SaveAdd(bm,ep); } if(frame==imageFiles.Length-1) { //flush and close. ep.Param[0]=new EncoderParameter(enc,(long)EncoderValue.Flush); pages.SaveAdd(ep); } frame++; } } catch (Exception) { throw; } return; } /// <summary> /// This function will join the TIFF file with a specific compression format /// </summary> /// <param name="imageFiles">array list with source image files</param> /// <param name="outFile">target TIFF file to be produced</param> /// <param name="compressEncoder">compression codec enum</param> public void JoinTiffImages(ArrayList imageFiles,string outFile,EncoderValue compressEncoder) { try { //If only one page in the collection, copy it directly to the target file. if (imageFiles.Count==1) { File.Copy((string)imageFiles[0],outFile,true); return; } //use the save encoder Encoder enc=Encoder.SaveFlag; EncoderParameters ep=new EncoderParameters(2); ep.Param[0]=new EncoderParameter(enc,(long)EncoderValue.MultiFrame); ep.Param[1] = new EncoderParameter(Encoder.Compression,(long)compressEncoder); Bitmap pages=null; int frame=0; ImageCodecInfo info=GetEncoderInfo("image/tiff"); foreach(string strImageFile in imageFiles) { if(frame==0) { pages=(Bitmap)Image.FromFile(strImageFile); //save the first frame pages.Save(outFile,info,ep); } else { //save the intermediate frames ep.Param[0]=new EncoderParameter(enc,(long)EncoderValue.FrameDimensionPage); Bitmap bm=(Bitmap)Image.FromFile(strImageFile); pages.SaveAdd(bm,ep); bm.Dispose(); } if(frame==imageFiles.Count-1) { //flush and close. ep.Param[0]=new EncoderParameter(enc,(long)EncoderValue.Flush); pages.SaveAdd(ep); } frame++; } } catch (Exception ex) { #if DEBUG Console.WriteLine(ex.Message); #endif throw; } return; } /// <summary> /// Remove a specific page within the image object and save the result to an output image file. /// </summary> /// <param name="pageNumber">page number to be removed</param> /// <param name="compressEncoder">compress encoder after operation</param> /// <param name="strFileName">filename to be outputed</param> /// <returns></</returns> public void RemoveAPage(int pageNumber,EncoderValue compressEncoder,string strFileName) { try { //Split the image files to single pages. ArrayList arrSplited=SplitTiffImage(this._TempWorkingDir,compressEncoder); //Remove the specific page from the collection string strPageRemove=string.Format("{0}\\{1}{2}.TIF",_TempWorkingDir,GetFileNameStartString(this._ImageFileName),pageNumber); arrSplited.Remove(strPageRemove); JoinTiffImages(arrSplited,strFileName,compressEncoder); } catch(Exception) { throw; } return; } /// <summary> /// Getting the supported codec info. /// </summary> /// <param name="mimeType">description of mime type</param> /// <returns>image codec info</returns> private ImageCodecInfo GetEncoderInfo(string mimeType) { ImageCodecInfo[] encoders=ImageCodecInfo.GetImageEncoders(); for (int j=0;j<encoders.Length;j++) { if (encoders[j].MimeType==mimeType) return encoders[j]; } throw new Exception( mimeType + " mime type not found in ImageCodecInfo" ); } /// <summary> /// Return the memory steam of a specific page /// </summary> /// <param name="pageNumber">page number to be extracted</param> /// <returns>image object</returns> public Image GetSpecificPage(int pageNumber) { MemoryStream ms=null; Image retImage=null; try { ms=new MemoryStream(); Guid objGuid=image.FrameDimensionsList[0]; FrameDimension objDimension=new FrameDimension(objGuid); image.SelectActiveFrame(objDimension,pageNumber); image.Save(ms,ImageFormat.Bmp); retImage=Image.FromStream(ms); return retImage; } catch (Exception) { ms.Close(); retImage.Dispose(); throw; } } /// <summary> /// Convert the existing TIFF to a different codec format /// </summary> /// <param name="compressEncoder"></param> /// <returns></returns> public void ConvertTiffFormat(string strNewImageFileName,EncoderValue compressEncoder) { //Split the image files to single pages. ArrayList arrSplited=SplitTiffImage(this._TempWorkingDir,compressEncoder); JoinTiffImages(arrSplited,strNewImageFileName,compressEncoder); return; } /// <summary> /// Image file to operate /// </summary> public string ImageFileName { get { return _ImageFileName; } set { _ImageFileName=value; } } /// <summary> /// Buffering directory /// </summary> public string TempWorkingDir { get { return _TempWorkingDir; } set { _TempWorkingDir=value; } } /// <summary> /// Image page number /// </summary> public int PageNumber { get { return _PageNumber; } } #region IDisposable Members public void Dispose() { image.Dispose(); System.GC.SuppressFinalize(this); } #endregion } Tag: Icon in the tray for a service app Tag: 101217
  - 3
    - Custom Class - Different Instances Hello, I have a custom component class that I created that will basically save x amount of "objects." Once x + 1 object pops in, the oldest one falls off. It works great as I have it. In my test web page I create a Static object and use the New to create a new instance of it. If I don't use the Static, nothing is remembered. The only problem is, when I start a second page, I expect it to have a NEW instance of the class but the numbers stored show up the same. How do I get it to always create a New instance. Am I missing the public, private, protected, internal - modifiers in the wrong position? Please help. - - - - - - - Class File: using System; using System.ComponentModel; using System.Collections; using System.Diagnostics; namespace NASQLStatements { public class ThingsRemembered : System.ComponentModel.Component { private System.ComponentModel.Container components = null; private int iThingsToRemember; protected internal ArrayList aThings; public ThingsRemembered(System.ComponentModel.IContainer container) { container.Add(this); InitializeComponent(); aThings = new ArrayList(2); } public ThingsRemembered() { InitializeComponent(); aThings = new ArrayList(2); } public ThingsRemembered(int iCapacity) { InitializeComponent(); aThings = new ArrayList(iCapacity); } public ThingsRemembered(System.ComponentModel.IContainer container, int iCapacity) { container.Add(this); InitializeComponent(); aThings = new ArrayList(iCapacity); } protected override void Dispose( bool disposing ) { if( disposing ) { if(components != null) { components.Dispose(); } } base.Dispose( disposing ); iThingsToRemember = 0; aThings.Clear(); // delete all items aThings.TrimToSize(); // resize the array to system default } #region Component Designer generated code private void InitializeComponent() { components = new System.ComponentModel.Container(); } #endregion public int ThingsToRemember { get { return iThingsToRemember; } set { iThingsToRemember = value; aThings.Capacity = iThingsToRemember; // size the array } // set } // ThingsToRemember - Property - Read/Write public bool AddAThing(object oThing) { try { if(aThings.Count == aThings.Capacity) { aThings.RemoveAt(0); // remove the oldest one } // if there are already the maximum number of items in the array aThings.Add(oThing); // add the new one return true; } catch(Exception e) { sLastError = e.ToString(); return false; } // try-catch errors } // AddAThing - Method public string LastError { get { return sLastError; } } // LastError - Property - Read Only public object LastThing() { return aThings[aThings.Count - 1]; } // LastThing - Method public object FirstThing() { return aThings[0]; } // FirstThing - Method public ArrayList AllThings { get { return aThings; } } // AllThings - Property - Read Only } } - - - - - - - Test File: using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using NASQLStatements; namespace TestThings { public class WebForm1 : System.Web.UI.Page { protected System.Web.UI.WebControls.Button cmndAddThing; protected System.Web.UI.WebControls.Button cmndShowThings; protected System.Web.UI.WebControls.Label lablThings; private static NASQLStatements.ThingsRemembered oStuff = new NASQLStatements.ThingsRemembered(); private void Page_Load(object sender, System.EventArgs e) { if(!Page.IsPostBack) { oStuff.ThingsToRemember = 5; lablThings.Text = oStuff.AllThings.Capacity.ToString() + "<br>" + oStuff.AllThings.Count.ToString(); } // if this is the first time to the page } #region Web Form Designer generated code override protected void OnInit(EventArgs e) { InitializeComponent(); base.OnInit(e); } private void InitializeComponent() { this.cmndAddThing.Click += new System.EventHandler(this.cmndAddThing_Click); this.cmndShowThings.Click += new System.EventHandler(this.cmndShowThings_Click); this.cmndError.Click += new System.EventHandler(this.cmndError_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void cmndShowThings_Click(object sender, System.EventArgs e) { lablThings.Text = "" + oStuff.AllThings.Capacity.ToString() + "<br>"; for(int iPos = oStuff.AllThings.Count - 1; iPos >= 0; iPos--) { lablThings.Text += oStuff.AllThings[iPos].ToString() + "<hr>"; } // for each item } private void cmndAddThing_Click(object sender, System.EventArgs e) { Random rRandom = new Random(DateTime.Now.Millisecond); int iValue = rRandom.Next(1, 1000); lablThings.Text += "<br>" + oStuff.AddAThing(iValue).ToString(); } } } As you can see, in the Test file I declare the Class as private static and do a NEW. I assumed the New is necessary so it can create a New instance of it. If it take out the Static modifier, nothing works and no random numbers are stored. If I leave it in, it will remember the number (5) I have told it. But so will each new web page I bring up and point to that page. Please help. -- Thanx, Kevin Tag: Icon in the tray for a service app Tag: 101212
  - 4
    - COM exception Error after Installing windows 2003 service pack 1 Hi, I developed an ASP.NET Web application and 3rd party COM component is used in this application(Not using COM+, so component is not available in Component Services). This code was working fine before migrating to Windows 2003 SP1. But I am getting the following error after migrating to Windows 2003 SP1 when creating an COM component in ASP.NET (C# Web Services). However, it is working fine in C# application after migrating to Windows SP1. Thanks -Amar Tag: Icon in the tray for a service app Tag: 101210
  - 5
    - Passing Array using Reflection Hi , Can anybody help me why this code is failing? I am passing an array using reflection. using System; using System.Reflection; using System.Collections; namespace ReflectionTest { public class M { public void Method(string[] x) { Console.WriteLine(x[0]); //x ="Changed value"; } [STAThread] public static void Main() { Hashtable h = new Hashtable(); h.Add("ABC", "Initial value"); //Set initial value h.Add("BCD", "Second value"); //Set second value Type t = typeof(M); M m = (M)Activator.CreateInstance(t);//Create instance of M Type [] p = new Type[2]; p[0] = Type.GetType("System.String");//typeof(ref string) p[1] = Type.GetType("System.String");//typeof(ref string) MethodInfo mi = t.GetMethod("Method", p);//Get the method Object [] ps = {h["ABC"],h["BCD"]}; //Create param array mi.Invoke(m,ps); Console.WriteLine(h["ABC"]); //**output is "Initial value" Console.WriteLine(ps[0].ToString()); } } } Thanks in advance. - Vignesh Tag: Icon in the tray for a service app Tag: 101209
  - 6
    - using web pages in web custom control Hi, I want to use web pages(*.aspx) in web control.Can any one tell me how it is possible. Thanks in advance. Tag: Icon in the tray for a service app Tag: 101206
  - 7
    - DirectoryInfo.Getfiles does not return all files in folder I've got a little routine that relies on DirectroyInfo.GetFiles to return a list of all the files in a specified folder. The folder happens to contain well over 2800 XML files, yet DirectoryInfo.Getfiles is only returning 305 of them. This has totally stumped me and proving to be a show-stopper! Any ideas Tag: Icon in the tray for a service app Tag: 101205
  - 8
    - Check if mms:// or rtsp:// url exists (url not broken) Hello, I need to verify if mms:// or rtsp:// urls exists. I do like this for http:// : public static bool GetPage(String url) { try { // Creates an HttpWebRequest for the specified URL. HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url); // Sends the HttpWebRequest and waits for a response. HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse(); if (myHttpWebResponse.StatusCode == HttpStatusCode.OK) return true; // Releases the resources of the response. myHttpWebResponse.Close(); } catch(WebException e) { Console.WriteLine("\r\nWebException Raised. The following error occured : {0}",e.Status); } catch(Exception e) { Console.WriteLine("\nThe following Exception was raised : {0}",e.Message); } return false; } If I replace mms:// by http:// , I can check the url. But the same code doesn't work for rtsp protocols. I apreciate any help to learn how to request a mms:// and rtsp:// file.(just need to check if the url is not broken) Thanks in advance for your help. *** Sent via Developersdex http://www.developersdex.com *** Tag: Icon in the tray for a service app Tag: 101201
  - 9
    - Finding out if an exception occurred in a finally block. (.NET 2.0) Hi. Since my situation is a little complex I have simplified it for this post. I start a database transaction. Do some work with it in a try-finally block, and in the finally block I dispose resources. I would like to in my finally block detect if we are leaving because of the code actually just leaving the block (normally or through a return statement) or an exception occurred. If we are leaving normally I want to commit the transaction, and if we are leaving because an exception is thrown, I want to abort the transaction. SqlConnection conn = CreateNewOpenConnection(...) try { SqlTransaction trans = conn.BeginTransaction() // do work } finally { if (exception occurred) trans.Rollback(); else trans.Commit(); trans.Dispose(); conn.Dispose(); } Is this possible. I'm using the .NET framework 2.0 Thanks in advance, Peter Strøiman Tag: Icon in the tray for a service app Tag: 101199
  - 10
    - Imports VS Namespace.Namespace2.Class1 Item #1: Project Reference > DLLClass1 Project Properties > Imports > Namespace.Namespace2 - In Code Behind: * Dim NewClass1 As New Class1 Item #2: Project Reference > DLLClass1 - In Code Behind: * Dim NewClass1 As New Namespace.Namespace2.Class1 * What will be better? Item #1 or #2?, Does MS have an article for this? (I need proof for this matter, about their performance, advantages and disadvantages.) Thanks in Advance! Tag: Icon in the tray for a service app Tag: 101191
  - 11
    - GC problem Hi, I am setting System.Threading.Thread.CurrentPrincipal to a Windows pricipal before I go ahead call methods to process, sometimes cross assembly. The problem I am facing is that intermittently the WindowsPrincipal object within seems to be garbage collected because I get "Handle is invalid" sometimes.I tried setting GC.KeepAlive (System.Threading.Thread.CurrentPrincipal) post setting the value in CurrentPrincipal variable. It did not help the cause. Is there something amiss in what I am doing here? Thanks in advance, Madhu Tag: Icon in the tray for a service app Tag: 101187
  - 12
    - system.runtime.interopservices.comexception Hi, My application was working fine on windows 2003 server. after installing Service pack 1, in my application COM component try to access a folder on c: and getting error "system.runtime.interopservices.comexception" Message = " The server throw an exceptions". Would appreciate any suggestions to resolve this issue. Tag: Icon in the tray for a service app Tag: 101186
  - 13
    - system.runtime.interopservices.comexception hi, I are getting an error while my .Net application try to creat a com object, This error getting after installation of windows 2003 service pack 1. The issue was not repeated after uninstalling the service pack 1. The error is "system.runtime.interopservices.comexception" and "server threw an error". Did anybody face this issue? Would appreciate any suggestions to resolve this issue. Tag: Icon in the tray for a service app Tag: 101185
  - 14
    - dotnetfx deployment program. Hi, I have an Install project which a service. I am using the setup.exe which checks for the presence of the framework and deploys it if it is missing so the install Project is set to . My install package has been working quite happily for some months on the Development machine. However it has now started giving the error message: 'MyService install Setup has failed. If the problem persists, please contact Product Support.' The msi package is OK because if I execute it directly it performs the installation OK. Looking inside setup.exe and dotnetfx.exe with a text editor shows that the message is present in dotnetfx.exe only. So I ran up another install which installs an application using the same setup.exe and dotnetfx.exe This went OK i.e. The setup stepped through to calling the msi file. So the only difference I can see is that the first project is installing a service while the second is installing an application. I restate that this was all working and has suddenly stopped. Has anybody struck anything similiar? thanks Bob Tag: Icon in the tray for a service app Tag: 101182
  - 15
    - Port .Net 1.0 application to Windows Server 2003 Hi, We have a complex application (C#, EnterpriseServices (COM+), MSMQ, etc). Application was developed with .Net Framework 1.0 and running on Windows 2000 with SP3. We need to port it to Windows 2003. By default, Windows 2003 has .Net Framework 1.1 installed. Initiall we were planning an application upgrade to 1.1. But later decided to try to install .Net Framework 1.0 on Windows 2003 server and try to port it the way it is now. Is it doable? I don't see why not. I was reading different sources and I didn't find any reasonings why not. Can you let me know, please. Second issue for the same problem: an applicaiton server, that is going to be running a COM+ components is like I said Windows 2003. I installed a component on it, extracted a proxy and installed that proxy to the test machine from which I tried to run a strip-down version of the same application (only test machine issies calls to the database thru COM= component.). I receive the following error message: The activation for CLSID {070CE8EA-70F6-4E7C-8E73-A902507E811F} failed because remote activations for COM+ are disabled. To enable this functionality use the Configure Your Server wizard and select the Web Application Server role. The application is desctop, no web interface. Why does it need to be configured for the Web Application Server role? Is it a Windows 2003 issue? We prepared the server just as we did before with Windows 2000. Any input is welcome. Tha nk you in advance. Tag: Icon in the tray for a service app Tag: 101180
  - 16
    - Getting Process ID of a created ActiveX object Hi, I'm using C# to create an AutoCAD object in this manner.. private AcadApplication acadApp; const string acad2004ProgID = "AutoCAD.Application.16"; acadApp = (AcadApplication)System.Runtime.InteropServices.Marshal.GetActiveObject(acad2004ProgID); and that works fine... now what I want to be able to do is get the Process ID of that autocad object so I can do things like Killing it or whatever using commands from System.Diagnostics Is there any way to obtain the Process ID of that autocad object without having to use any strange workarounds? Thanks, Himanshu Tag: Icon in the tray for a service app Tag: 101177
  - 17
    - N Tier Architecture ? Hi 1. I am in process of designing N-Tier Application using ASP.NET. Can anyone guide me the right material or microsoft guidelines document which I can used in designing the N-Tier application. 2. I would also like to know whether to use Web Services or .Net Remoting in designing N-Tier application 3. General 3 Tier architecture has 3 Tier : Presentation Layer , Business Layer and Database Layer How this 3 layers are seperated out in N-Tier architecture. Help would be very much appreciated. Thanks Silent Ocean Tag: Icon in the tray for a service app Tag: 101176
  - 18
    - DRAWIMAGE() -> TONS OF PAGE FAULTS! Originally, I thought this was due to DoubleBuffer, but ran some further experiments and discovered that page faults occur when calling DrawImage(). For example, create 2 images about 800x800, then call DrawImage to copy from to the other (on say a mouse click). Notice about 600+ page faults occur each time (the larger the area, the greater the number of page faults). I have an application that calls DrawImage() once a second to update the main screen, so after a few days, the page fault count is monsterous. I swear this bogs down my system too. Anyone else have this problem? Any solutions? Can someone report this as a DEFECT. Thanks, Steve Tag: Icon in the tray for a service app Tag: 101175
  - 19
    - How To: Custom Performance Counters with intervals other than 1 second? I want to implement a custom performance counter for monitoring errors in my application. However, the correct rate is not exceptions per second! (If my app is throwing multiple exceptions per second, then the last thing I need to be doing is writing custom performance counters!) I want to implement a counter that has a period of 1 hour. What is the right way (or best way) to do this? I figure out one way, but I had to implement all the code and not use any of the methods in the Diagnostics namespace (other than just setting the raw value of my counter). I don't think that is the right way to do it. Although all the framework code seems to assume periodicity of 1 sec, I have a feeling I should be able to use the framework methods and obtain rates per hour -- I just need some help figuring out the way to go about it. Thanks Tag: Icon in the tray for a service app Tag: 101174
  - 20
    - How to create a blind and dumb window? I need a topmost window that does not recive keyboard neither the mouse input and is never activated and never gets focus. What is the solution? Thanks JH Tag: Icon in the tray for a service app Tag: 101171
  - 21
    - HttpWebRequest and Multi Threaded apps Question Hi, Im in the process of writing a program that crawls a website. Im using the HttpWebRequest and HttpWebResponse classed to get content. To make my application more scalable, my application is multithreaded, with each thread making a different request. One problem Ive ran into is that when writing the response stream to the filesystem, from the HttpWebResponse.GetResponseStream() method, if the response is of a sufficient size, it blocks all other other executing threads. If this exceeds the timeout, then all the other threads that are in the process of making a Web Request time out. Ive taken every effort to ensure that my application is not locking, I was wondering if given the scenario that Ive listed, would using Asynchronous Web Requests be more efficient? Ive not worked with them before so Id be grateful of your opinions. Cheers, Mark Tag: Icon in the tray for a service app Tag: 101168
  - 22
    - reverse polymorphism Class A extends Control and creates a "new" Size property hiding Size from the Control class. A method M from another class (not related to A or Control) has a parameter of type Control. Question: If an A object is passed to M, is there a way to call Size from A instead of Size from Control ? Tag: Icon in the tray for a service app Tag: 101165
  - 23
    - Dynamically calling methods on an object Guys, I would like to dynamically add methods to a .NET object when calling through reflection / COM interop. I think the IExpando interface may be suited but can't find any documentation / samples on this. Any ideas or resources I can look at? Cheers Matt Tag: Icon in the tray for a service app Tag: 101162
  - 24
    - Convert BinaryString into int? Hello, I have some binarystrings in the registry (from an older j++ app) that I need to convert at runtime to ints. What is the best practice for this? In J++ you could just call Integer.ParseInt(val, 2); I've tried Convert.ToUInt32(object, int) but I can't get the compiler to believe that is a valid overload; it keeps complaining that it can't convert an int to an IFormatProvider, which is a different overload. Is that convert function broken? Is there another way to do this or am I just screwed? Keith Tag: Icon in the tray for a service app Tag: 101160
  - 25
    - Issue with MMC in VS.NET Dear all, I am facing a frustrating problem in trying to make sense of an existing MMC Snapin developed using Visual Studio .NET by You-Know-Who. Well, the project type for the Snapin is a Class Library. Once I build the solution from visual Studio .NET, the solution consisting of the Class Library and the Packager, will churn out a .MSC file.. All this is working fine.. I am supposed to enhance this project and I must add that I have no prior experience in developing or debugging MMC Snapins in .NET. Since I have not developed this project, I have really no clue as to how to go about getting into a debug environment for this project. Can anyone please help?? An attempt to debug would say that the project is of class library type and therefore cannot be debugged directly.... I need to be able to debug to make sense of how this one works... Any help would be really appreciated.. Thanks and regards, Varkey Tag: Icon in the tray for a service app Tag: 101154

Hello.

I'm creating a windows service and would like to add a tray icon for it.

Can this be done from a windows service app, or do I need to create a
controller app?

Thanks in advance,

Mike

Top

Re: Icon in the tray for a service app by Mattias

Mattias
Fri Aug 12 07:51:42 CDT 2005

>Can this be done from a windows service app, or do I need to create a
>controller app?

There are good reasons for putting it in a separate application.
Services should generally not interact with the user desktop.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
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Re: Icon in the tray for a service app by mike

mike
Fri Aug 12 08:01:19 CDT 2005

Pretty much what I thought.

Thanks Mattias.

"Mattias Sjögren" <mattias.dont.want.spam@mvps.org> wrote in message
news:OtBYNyznFHA.3256@TK2MSFTNGP12.phx.gbl...
> >Can this be done from a windows service app, or do I need to create a
>>controller app?
>
> There are good reasons for putting it in a separate application.
> Services should generally not interact with the user desktop.
>
>
>
> Mattias
>
> --
> Mattias Sjögren [MVP] mattias @ mvps.org
> http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
> Please reply only to the newsgroup.

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Re: Icon in the tray for a service app by hB

hB
Sat Aug 13 08:04:46 CDT 2005

its better in a separate application.
Let this application and service communicate.
(for example: once we used sockets to communicate-show status-control
after authentication)

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hB

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