Optimising data retrieval display ie negating Postbacks.. ??

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  - 1
    - FTP rename fails with unix servers dotnet 2.0 I'm writing an app to upload/download via FTP using VS2005. I am using the FTP Client Library for .NET 2.0 by Howard Richards: http://www.codeproject.com/vb/net/FtpClient.asp Upload download works. but when trying to rename a file with GetResponse it errors with error 500 (Syntax error, command unrecognized). This only happens with unix FTP servers - windows ones work perfectly. I am trying to rename the files before downloading, to avoid contention - attempting to dowload a file before it has finished being uploaded. (if someone could suggest another way to avoid this contention, I wouldn't need the rename command). I have seen someone else with hte exact same problem, but it hasn' been resolved: http://groups.google.co.uk/group/microsoft.public.dotnet.general/browse_thread/thread/17a43b1cae83129c/456d4f335f0ba60c?lnk=gst&q=ftp+issue&rnum=1#456d4f335f0ba60c for the time being I am going to use a third party tool, but I'd rather have the source of any code I use ... -- Marty Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120938
  - 2
    - File.Exists? A file named Form1.asp exists in the folder C:\Inetpub. The following code exists in a file named FindFile.aspx which exists in C:\Inetpub\wwwroot\ASPX: <script runat="server"> Sub Page_Load(obj As Object, ea As EventArgs) Dim ioFileInfo As FileInfo ioFileInfo = New FileInfo(Server.MapPath("../../Form1.asp")) If (ioFileInfo.Exists) Then Response.Write("File Exists") Else Response.Write("File Doesnot Exist") End If End Sub </script> Now since FindFile.aspx exists in the folder C:\Inetpub\wwwroot\ASPX & the file I am searching for (Form1.asp) exists in C:\Inetpub, I have to move up by 2 folders which is why I have used ../ twice in Server.MapPath but ASP.NET generates the following error: Cannot use a leading .. to exit above the top directory. pointing to the Server.MapPath line. How do I detect the existence of Form1.asp in C:\Inetpub? Thanks, Arpan Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120937
  - 3
    - simple Socket Programming question. Hi, I am a bit new in socket programming and I have a question about what's the best way to implemnt a TCPClient that can receive long messages? The example I found in MSDN works for me but it downloads only the first chunck of data sent by the server I connect to. How can i make the code wait until the end of the message is received from the server? Changing the buffer size won't change anything as i guess the stream.Read() method returns after the first bunch of data is received from the server. I don't really know how many packets is that neither why it returns before everything is read but i guess that i need to add in some infrastructure that will do some waiting and / or looping and which will detect when all the data is read and that i can exit. I have done some research on the internet and the example i saw often did not care for this kind of longer message or were too complex or not working if not communicating with their own server implementation. I have no access on the server I connect to then I cannot change anything on that side. Here is the code i use from MSDN doc (TCPClient class): static void Connect(String server, String message) { try { // Create a TcpClient. // Note, for this client to work you need to have a TcpServer // connected to the same address as specified by the server, port // combination. Int32 port = 13000; TcpClient client = new TcpClient(server, port); // Translate the passed message into ASCII and store it as a Byte array. Byte[] data = System.Text.Encoding.ASCII.GetBytes(message); // Get a client stream for reading and writing. // Stream stream = client.GetStream(); NetworkStream stream = client.GetStream(); // Send the message to the connected TcpServer. stream.Write(data, 0, data.Length); Console.WriteLine("Sent: {0}", message); // Receive the TcpServer.response. // Buffer to store the response bytes. data = new Byte[256]; // String to store the response ASCII representation. String responseData = String.Empty; // Read the first batch of the TcpServer response bytes. Int32 bytes = stream.Read(data, 0, data.Length); responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes); Console.WriteLine("Received: {0}", responseData); // Close everything. stream.Close(); client.Close(); } catch (ArgumentNullException e) { Console.WriteLine("ArgumentNullException: {0}", e); } catch (SocketException e) { Console.WriteLine("SocketException: {0}", e); } Console.WriteLine("\n Press Enter to continue..."); Console.Read(); } Anyone can help me or point me to an adequate resource?Thanks a lot,Francois Malgreve Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120936
  - 4
    - Crystal Report Viewer Memory Overhead I am developing a windows application in VB.NET 2005 that includes a number of crystal reports. To use the reports I use the included crystal report viewer and pass a dataset to the report at runtime in order to report from. The issue I am having is with the amount of memory that the crystal viewer uses and doesn't recover. When I first load a report it can add an extra 30Mb to my applications memory usage, then as I close and open report viewer that usage keeps increasing. The memory overhead never seems to recover after I have closed the crystal viewer. I have been looking at VB.NET 2005 and using the new crystal viewer in that environment has the same problem, if not actually using more memory to display the same report. Is this a known issue, and if so are there any known solutions? Any advice would be appreciated. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120935
  - 5
    - XML reading issue.... I have some XML file like that: === <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>affiliateId</key> <string>AFL9124395098</string> .......................... === Now when I'm reading them with XmlDocument or XmlTextReader the reader try to connect to aple (because of <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">) and that causes exception when there is no network (and of course the XmlTextReader or XmlDocument fail to read the text) The problem is: I don't care about apple schema, I do the reading myself and it's going to be alllright. Is there a way I could skip over it? -- Regards, Lloyd Dupont NovaMind development team NovaMind Software Mind Mapping Software <www.nova-mind.com> Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120929
  - 6
    - DataGridView (.NET 2.0 Windows Forms) Text wrapping in DataGridView Items Greetings, Is it possible to have the text wrap in a DataGridView's DataGridViewItem/Row? And if so how is it accomplished? Thanks, Chris Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120924
  - 7
    - convert VB6 function to VB.NET Please, can someone help me to translate this single function to VB.NET ? ' DECLARATIONS Private Const BMP_MAGIC_COOKIE As Short = 19778 Private Structure BITMAPFILEHEADER '14 bytes Dim bfType As Short Dim bfSize As Integer Dim bfReserved1 As Short Dim bfReserved2 As Short Dim bfOffBits As Integer End Structure Private Structure BITMAPINFOHEADER '40 bytes Dim biSize As Integer Dim biWidth As Integer Dim biHeight As Integer Dim biPlanes As Short Dim biBitCount As Short Dim biCompression As Integer Dim biSizeImage As Integer Dim biXPelsPerMeter As Integer Dim biYPelsPerMeter As Integer Dim biClrUsed As Integer Dim biClrImportant As Integer End Structure Private Structure RGBQUAD Dim Red As Byte Dim Green As Byte Dim Blue As Byte Dim Reserved As Byte End Structure Private Structure BITMAP Dim bmType As Integer Dim bmWidth As Integer Dim bmHeight As Integer Dim bmWidthBytes As Integer Dim bmPlanes As Short Dim bmBitsPixel As Short Dim bmBits As Integer End Structure Private Const BI_RGB As Integer = 0 Private Declare Function GetProcessHeap Lib "kernel32.dll" () As Integer 'handle Private Declare Function HeapAlloc Lib "kernel32.dll" (ByVal hHeap As Integer, ByVal dwFlags As Integer, ByVal dwBytes As Integer) As Integer Private Declare Function HeapFree Lib "kernel32.dll" (ByVal hHeap As Integer, ByVal dwFlags As Integer, ByVal lpMem As Integer) As Integer Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (ByRef dest As IntPtr, ByVal fromAddress As String, ByVal bytesToCopy As Long) Private Const HEAP_ZERO_MEMORY As Integer = &H8S Private m_memBits() As Byte Private m_memBitmapInfo() As Byte Private m_bih As BITMAPINFOHEADER Private m_bfh As BITMAPFILEHEADER 'FUNCTION Public Function CreateFromPackedDIBPointer(ByRef pDIB As Long) As Boolean Debug.Assert pDIB <> 0 'Creates a full-color (no palette) DIB from a pointer to a full-color memory DIB 'get the BitmapInfoHeader Call CopyMemory(ByVal VarPtr(m_bih.biSize), ByVal pDIB, Len(m_bih)) If m_bih.biBitCount < 16 Then Debug.Print "Error! DIB was less than 16 colors." Exit Function 'only supports high-color or full-color dibs End If 'now get the bitmap bits If m_bih.biSizeImage < 1 Then Exit Function 'return False ReDim m_memBits(0 To m_bih.biSizeImage - 1) Call CopyMemory(m_memBits(0), ByVal pDIB + 40, m_bih.biSizeImage) 'and BitmapInfo variable-length UDT ReDim m_memBitmapInfo(0 To 39) 'don't need first 14 bytes (fileinfo) Call CopyMemory(m_memBitmapInfo(0), m_bih, Len(m_bih)) 'create a file header With m_bfh .bfType = BMP_MAGIC_COOKIE .bfSize = 55 + m_bih.biSizeImage 'size of file as written to disk .bfReserved1 = 0& .bfReserved2 = 0& .bfOffBits = 54 'BitmapInfoHeader + BitmapFileHeader End With 'and return True CreateFromPackedDIBPointer = True End Function Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120923
  - 8
    - DataControlFieldCollection instantiated twice I'm trying to create my own GridView with some addons. I'm realising that by creating a placeholder with a GridView and SQLDataSource in it. The problem is dat the fields defined in the DataFieldControlCollection gets instantiated twice with which the second instantiation doesn't have any attribute/property set. Here is my code: <phaFramework:EditGrid id = "E01" query = "SELECT bla FROM bla" runat = "Server" > <Fields> <phaForm:frwNumericField ID = "percentage" HeaderText = "Percentage"> <validators> <phaValidator:frwNumericValidator minimalValue = 0 maximumValue = 10 /> </validators> </phaForm:frwNumericField> </Fields> </phaFramework:EditGrid> Public Class EditGrid Inherits PlaceHolder Friend WithEvents baseGridView As New GridView Friend WithEvents baseDataSource As New SqlDataSource Public Sub New() Me.Controls.Add(Me.baseGridView) Me.Controls.Add(Me.baseDataSource) End Sub Public ReadOnly Property Fields() As FormFieldCollection Get If ViewState("Fields") Is Nothing Then ViewState("Fields") = New FormFieldCollection(Me) End If Return ViewState("Fields") End Get End Property End Class Public Class FormFieldCollection Inherits List(Of iFormField) End Class Public Class frwTextField Inherits TemplateField Implements iFormField, IBindableTemplate Protected arrValidators As New ValidatorCollection Public ReadOnly Property validators() As ValidatorCollection Get Return Me.arrValidators End Get End Property End Class Public Class ValidatorCollection Inherits List(Of BaseValidator) End Class Basicly that's it. I have ofcourse simplified the code. It is mush more than this. I've put logging (Trace) everythere and there i can see that the frwNumericValidator is created and added to the List of validators. When the Template of the field is instantiated (InstantiateIn called) the validators collection is empty (count=0). I can also see that the ValidatorCollection is created twice (the New contstructor called twice). what i think is that: 1) the FieldCollection is created by me with the New constructor 2) the FieldCollection is also created by restoring the ViewState. And that in between the properties are set so that the second instantiation doesn't have these properties set (these properties are min/maxValues as can be seen as attributes of the aspx tag). I've tried several options. I've tried creating the FieldCollection as a StateManagedCollection (like the GridView.columns). No success. Can someone explain me how the .Net framework works? What is it doing? Sam. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120921
  - 9
    - Here you can read books free and buy all tickets Here you can read books free and buy all tickets you can find all tickets here: http://allticket.yourfreewebspace.com/ you can read books free: http://onlinebook.yourfreewebspace.com/ http://bookonline.yourfreewebspace.com/ Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120919
  - 10
    - FYI: Xmpp (Jabber) c# codebase, BSD style license, Piorun.Xmpp For general information... as I spent a lot of time tracking down the library I liked and wanted to be sure it was getting the attention it deserved. I am a long-term users of Jabber-net for our xmpp library but were growing frustrated with the lack of Compact Framework support. I found the jabber-net codebase too difficult to work with, just a clash in programming style... so I went looking for alternatives. I recently discovered a library named Piorun.Xmpp with a very clean codebase and a flexible license (MIT X11, similar to BSD license). It was available in the experimental .NET programming language Boo but we recently completed a C# conversion and now both languages are available for Piorun.Xmpp. The code is available here: http://piorun.sztorm.net/trac/ Based on my own experience, I would consider Piorun.Xmpp a good alternative to AgsXMPP (good cross-framework support, but restrictive license) and Jabber-net libraries (good license, but no support of Compact Framework). There is a mailing list for developers if you want to help contribute. I will be subscribed if you need any assistance with the library. Now that we have a C# version working, I am still doing some work on the Compact Framework 1.x compatibility, but it is only minor changes. Hope this is of use to someone. Stephen Gutknecht Extra Keywordz: csharp xmpp jabbernet jabber.net jabber.org GTalk Google talk protocol xml instant messaging im vb.net mono instant message CF Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120918
  - 11
    - Async Sockets and IOCPS Hang my head in shame; I only found out yesterday that .NET sockets are already doing overlapped I/O with IOCPs when you make async calls. The only problem I see (experimentally via debugging, so I don't know if it's true), is that each socket gets it's own IOCP. Is there any way to attach a socket to a specific IOCP, the way you do in Win32? Thanks, -- kov Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120909
  - 12
    - From microphone to sound card Hi, How to output the sound from microphone direct to sound card? Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120906
  - 13
    - WMI Getting Remote Computer Harddisk Info Good day fellows, my problem is, using wmi we can only get the hard disk info of machine running the asp.net application, now my question is can we get the client (Remote Machine) Harddisk info through the same WMI or do we need to use some other object in order to get remote machine harddisk info. reply is something i need on urgent basis. i want to get Client (Remote Computer) Hard disk info on my ASP.NET Page Dim wmiquery As WqlObjectQuery = New WqlObjectQuery("SELECT * FROM Win32_LogicalDisk") Dim wmifind As ManagementObjectSearcher = New ManagementObjectSearcher(wmiquery) Dim mobj As ManagementObject For Each mobj In wmifind.Get() Response.Write("Device ID: " + mobj("DeviceID") & "<br>") Response.Write("Description: " + mobj("Description") & "<br>") Response.Write("Drive's free space is: ") Response.Write(mobj("FreeSpace")) Response.Write("<br>") Response.Write("Drive's Capacity space is: ") Response.Write(mobj("Size")) Response.Write("<br>") Try Response.Write("Volume Name: " + mobj("VolumeName").ToString & "<br>") Response.Write("Volume Serial Number: " + mobj("VolumeSerialNumber") + "<br>") ' Response.Write("Volume Serial Number: " + mobj("VolumeSerialNumber") & "<br>") Catch ex As SystemException End Try Next with this code i am getting info of my own machine, when i run from another remote computer it still shows my hard disk info instead of that machines hard disk info. Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120905
  - 14
    - Deploying native Windows DLL used by .NET applications We have a native Windows DLL (let's call it native.dll) we developed a .NET interface for (let's say managed.dll). When a .NET application now uses the .NET interface to talk to the Windows DLL we always thought that managed.dll must be copied to the application directory (where the .NET application runs) and that native.dll can be anywhere as long it is in PATH or is somehow else found by Windows. The problem is however that the .NET application hangs on some computers unless native.dll is copied to the application directory. The problem is reproducable but exists only on some computers. On one computer native.dll can be copied to the Windows directory and everything works fine. On the other computer native.dll must be in the applicaton directory as otherwise the .NET application hangs when it tries to access native.dll. I used Dependency Walker (from http://www.dependencywalker.com/) to make sure that in every scenario all DLLs can be found. Thus I wonder why on some computer native.dll must be copied to the application directory for the .NET application not to hang. Is there a deployment recommendation like this? Or is this a bug in the .NET framework or CLR which doesn't locate DLLs correctly sometimes? Boris Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120895
  - 15
    - creating dynamic Excel forms, w/ validation -- possible? hello, i am on an interesting project. in this project, i have to create dynamic data-entry forms for offline-users to fill out, save locally, and eventually postback to our app (when back online). data validation is required on the form. i had looked at using PDF-forms for this.. Adobe's "LifeCyle Forms" would work perfectly. with it one can pass in xml to their webservice & get back PDF-form binaries. however, Adobe's pricing is simply unrealistic for any but super-large budgets (got an extra 50k + 20% annual maintainence for your project? talk to adobe). so now im back to something low-tech. sure, i could do it w/ .HTML forms w/ javascript validation, and use javascript to save the data-entry into a .xml file. however, a two-file solution is not viable for us. my next idea is probably better from a user standpoint anyway -- Excel forms. the user could input into the excel doc, save it, and later return it to us. two key questions: 1) can i build dynamic Excel forms w/ .NET? 2) if so, can i build them w/ any kind of data validation? any help would be greatly appreciated! thanks, matt Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120892
  - 16
    - Immutable Classes I've got some classes that I've built that currently require far too many locks when they're running in a multi-threaded environment. To get around this, I'm looking to make these classes immutable. I'm also trying to be (as any good programmer) as lazy as possible about the approach tha tI take. I have a class (XmppId) that has roughly the same properties on it you would expect of an email address. I would like to be able to say, "public class ImmutableXmppID : Immutable<XmppId>{}" I would also like to take the same approach as strings, with a global Intern list and precalculated hashes in order to help with performance. The issue so far is that this seems to be well beyond the scope of what Generics can do. The only option for doing this that I can see is to build a CodeSmith template, or even a custom piece of Code Generation for the CodeDOM, and then do it. Anyone done any signifigant work with immutable classes, and have any gems of wisdom they're willing to pass along? -- Chris Mullins MCSD.Net, MCPD Enterprise http://www.coversant.net/blogs/cmullins Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120886
  - 17
    - CreateChildView() vs DataTable.Select() on entire table Can anyone shed some light on why DataRowView.CreateChildView() would significantly slower than DataTable.Select()? my DataSet looks like this DataSet ds; //ds assignment code left out for simplicity ds.Tables["IDs"].PrimaryKey = new DataColumn[]{ ds.Tables["IDs"].Columns["ID"] }; ds.Tables[0].PrimaryKey = new DataColumn[]{ ds.Tables[0].Columns["ID"], ds.Tables[0].Columns["STID"] }; ds.Relations.Add("myRelation", ds.Tables["IDs"].PrimaryKey, new DataColumn[] {ds.Table[0].Columns["ID"]}); ds.Tables["IDs"] was created from Unique ID's in ds.Tables[0].. then when looping ds.Tables["IDs"].DefaultView... DataView dv = myDataRowView.CreateChildView("myRelation"); is slower than... DataRow[] drs = myDataRowView.DataView.Table.DataSet.Table[0].Select(string.format("ID = '{0}'"), myDataRowView["ID"}); with 3000 rows in Table[0], i have a piece of code that takes 10-11 secs to run using CreateChildView() vs .05 secs using Select(). i would just use the Select() method, but i lose the ability to use BoundFields in a GridView (and also Eval in the TemplateFields. i have to cast the DataItem each time i want to access a field in the DataRow) any advise would be greatly appreciated. thanks, bk Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120885
  - 18
    - Monster's account Hi!, We have got monster's account & are looking for partner to share it.If interested,contact me. Thanks. Regards, sachin, sachin@kraftware.com Mandar Purandare Kraftware Inc Tel: 402 218 2185 Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120883
  - 19
    - Compact framework Hi All, Is there a possiblity of displaying the picture of the caller assoicated with him during an incoming call ? and is it possible to record particular calls automatically ? Where can I get good examples for these ? regards,raja Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120882
  - 20
    - Asynchronous Design Pattern I'm thinking about using the design pattern described at the link below to solve a problem: http://msdn2.microsoft.com/en-us/library/ms228963.aspx I have a question, though, and would appreciate any help. The pattern describes using BeginOperationName and EndOperationName methods for asynchronous operations, where "OperationName" represents the name of the operation to be invoked asynchronously. For example, say you want to read from a Stream asynchronously. You would call BeginRead, passing it an AsyncCallback delegate and possibly an object representing state information. At some point, the stream invokes your callback. In your callback, you call EndRead, passing it the IAsyncResult object given to you to get the result of the read operation. Ok, say we are writing a class to implement this pattern. Instread of reading bytes, we're reading an object of some type. Let's call the class ObjectReader. We have the methods BeginReadObject and EndReadObject. Like the Stream class, this class has a Close method that disposes of the object. Where it gets fuzzy for me is trying to figure out what should happen when the BeginReadObject method is called and the ObjectReader's Close method is called before the specified callback is invoked. My thought is that in response to being closed, the ObjectReader should invoke any awaiting callbacks. When the callback calls EndObjectRead, it returns null indicating that no more objects are available to be read. Once all awaiting callbacks have been invoked, the ObjectReader finishes closing down. At this point, it is officially closed; any attempt to read from the ObjectReader will throw an ObjectDisposedException. For BeginReadObject operations that were invoked without a callback, i.e. null was passed instead of a delegate for the callback parameter, the wait handles of any remaining IAsyncResult objects are set when the ObjectReader is closed. Calls to EndReadObject behave just as they would inside the callback. Any thoughts? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120880
  - 21
    - How to force the security alert dialog to appear I would like the user to be able to choose "Unblock" on the security alert dialog when my application attempts to send a UDP packet for the first time. However, the securlty alert dialog does not appear. I have to tell the user (when running the app for the first time) to manually add my app to the exceptions list in the firewall. Why isn't windows prompting the user with the security alert dialog? I have the "Display notification..." check box checked, and it still doesn't appear. Is there something I should do before sending the packet? Doesn't the security alert work with UDP packets? Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120878
  - 22
    - How to Hi All, I am Ilayaraja. I have a interesting (might be beginners) doubt in Dot Net framework. I have an Solution Named X, I have to two projects A and B. A is an windows Applicaiton developed in VB.Net 2005 and B is an Class Application developed in C# 2005. B has an class similar to this.. public class Class1 { public static string Upper(string a) { string s; s = a.ToUpper(); } } I want to refer this class in VB form in the button click event. How to do that.. One solution I have got is that creating a DLL file for the class and give it an reference in the VB project and remove the Class application from the solution file. Do we have any other solution for this doubt? Please help me on this. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120873
  - 23
    - Designer Error when Inheriting from a Custom Base Control I have a project named CuiNetCF.Windows.Forms, where I have created a TextBoxBase class that is inherited from System.Windows.Forms.TextBox. I then try to create a TextBoxInherited that is inherited from my new TextBoxBase. The project compile and run fine BUT when viewing the TextBoxInherited in the designer I receive the following message: ERROR: The designer could not be shown for this file because none of the classes within it can be designed. The designer inspected the following classes in the file: TextBoxInherited --- The base class 'CuiNetCF.Windows.Forms.TextBoxBase' could not be loaded. Ensure the assembly has been referenced and that all projects have been built. This message goes away if I include a reference the project, but it doesn't seem right that I would need to add a reference to the same project! What am I missing??? [TextBoxBase.cs] namespace CuiNetCF.Windows.Forms { public partial class TextBoxBase : System.Windows.Forms.TextBox { public TextBoxBase() { //Maintained by the designer InitializeComponent(); } } } [TextBoxInherited.cs] namespace CuiNetCF.Windows.Forms { public partial class TextBoxInherited : TextBoxBase { public TextBoxInherited() { //Maintained by the designer InitializeComponent(); } } } Here are the steps that I do to create this problem: 1.) Create a new windows project. 2.) Add a new Custom Control called TextBoxBase.cs. 3.) Change the TextBoxBase class to inherit from TextBox. 4.) Add a new Custom Control called TextBoxInherited.cs. 5.) Change the TextBoxInherited class to inherfit from TextBoxBase. 6.) Try to view the TextBoxInherited class in the designer. Does this error out for anybody else??? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120871
  - 24
    - .NET 2.0 embaressment Hi everyone. I have a .NET 2.0 application that has been released using clickonce installation both online and from CD. I have no control over the end user systems and I am being flooded with complaints that the application fails to install on XP SP1 machines and NT4 systems. I understand that these two operating systems are not on the .NET framework 2.0 compatbility list. However the application will install and run on XP SP1 if I remove the MDAC 2.8 dependancy. However removing the MDAC 2.8 dependency means that windows 98 and ME systems will fail if MDAC has not been installed. The application was been very well received but the installation issues have left me red faced. I would like to redistribute the application but this time I do not want the installation to fail if the OS is not supported. I am OK about not supporting NT4, but I would like conditional support for XP SP1 installs using MDAC 2.7. Steve Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120864
  - 25
    - Click once and exe.config file I'm about to release a application to a customer. This app uses a config file to store connection settings. I'd like to be able to create a "Click Once" installer, as this will remove lots of dependency issues that are likely to arise with this app. However, my understanding of click once is that the application is installed to a obscure location, thus making it difficult for the customer to locate the config file in order to edit the settings. Is there an easy way around this, or given the requirements, would I be best advised to create a traditional installer package? I'd be grateful for any comments, as its vital I get this working correctly! Greg. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120861
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  - 1
    - Adding a Section In Configuration File I know that we can add a single name value entry in app.config or web.config in the configuration/configSettings/appSettings section like so: <add key="key" value="value" /> Question: I want to add a dictionary of name-value pairs. In other words, instead of a single name-value, I want to add a name-value collection in there. I could do this: <add key="key1" value="value1" /> <add key="key2" value="value2" /> <add key="key3" value="value3" /> but that would mix it up with other members that I do not intend to have as a part of this collection. Is there a way I can add a collection itself? How? And how would I then access it? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120860
  - 2
    - Converting 1.1 webapp to v2 Hi, We've finally got around to getting VS2005 for our development team and will be slowly, but surely upgrading all our in house projects accross. However -we have fallen at the first project! when converting a V1.1 web app to V2 - when compiling we get the following error: Error 1 The type 'ProductDB.Global' is ambiguous: it could come from assembly 'C:\Source\Systems\ProductDBAdmin\ProductDBAdmin_Mainline\src\AdminGui\bin\DRL.ProductDB.DLL' or from assembly 'C:\Temp\admingui\5f2af3cc\f03cc022\App_Code.jgiqizcm.DLL'. Please specify the assembly explicitly in the type name. C:\Source\Systems\ProductDBAdmin\ProductDBAdmin_Mainline\src\AdminGui\Global.asax 1 I have searched the web and the only replies I can see are "Delete your bin folder contents" or "Delete the temporary files folder" none of which worked for me.. Is there a fix / workaround / article for this that I'm missing? Regards Phil Yardley Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120859
  - 3
    - User interface editor I am able to add different dialogs to my deployment project using the User Interface Editor in Visual Studio .NET 2003 but I am yet to find out how to retrieve the values entered by the user during installation. For example, if I add a new dialog which contains a TextBox and I ask the user to enter their name, how do I retrieve that name? I have scanned the web for a long time and yet I still haven't seen an example of how to get the values entered by the user during installation. Can anyone please point me to a suitable demonstration? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120858
  - 4
    - AppSettings trough ConfigurationManager I have a small test app with the code: Configuration cf = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); cf.AppSettings.Settings.Add("EnNyNokkel", "EnNyVerdi"); cf.Save(); If i run my app from inside VisualStudio through debug my created config file is created on startup of the program, but deleted when main is finished! If i however run the app from commandline or explorer, the configuration file is not deleted when the application finishes. Any good ideas why? Is this default debug settings? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120857
  - 5
    - show big image Hi all I have this problem I'm developing an application c# that interfaces with a digital camera as soon as the image is shot I download it in the PC and show it The problem is this one: the image is very big : 16 megapix! when I load it in a picturebox. If i try to pan or zoom (i modified the picture box to do that) the app is stuck ( I suppose because the load of panning and resizing such a big picture is very big too). I noticed that the same image is managed in a very efficient way by some freeware application such as for example irfan view My question is: there is a way in c# (maybe by a freeware library or component) to show, pan and zoom such a big image? Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120856
  - 6
    - How to configure Access database using Enterprise Library Data block Hi I want to know how to configure Access database using Enterprise Library Data block. I want to be able to spacify local path to mdb file in configuration file. I do not want users to creat DSNs, they should be able to connect any mdb file to application by updating configuration file. Best Regards Burki Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120855
  - 7
    - How can i create the function of ScreenCapture in the windows service????? How can i create the function of ScreenCapture in the windows service????? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120854
  - 8
    - Dealing with Timezones In .Net 2.0, I can get the standard name of the current timezone by: System.TimeZone.CurrentTimeZone.StandardName The problem I'm having is that I have datetimes that are serialized as a UTC time, with a named timezone. I keep looking for a way to say: System.TimeZone tz = new TimeZone("PST"); tz.ConvertToLocalTime(utcTime); Problem is there doesn't seem to way to do this. Anyone got any suggesting for dealing with TimeZones? -- Chris Mullins MCSD.Net, MCPD Enterprise http://www.coversant.net/blogs/cmullins Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120849
  - 9
    - Windows Defender I got A virus and the Defender was doing its job..but when all these windows started popping up I clicked on some "Ignore" buttons by accident..It finally cleaned the puter but when it runs the scheduled scan I wind up having to reboot to clean the puter. I realize there is still a problem, but when I go to the "Allowed Items" to delete the problems there is nothing there. I want this to go away! Can someone plz advise on what is the best solution. Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120847
  - 10
    - ANN: ZipForge.NET 1.00 is released ZipForge.NET lets a .NET application create and manipulate Zip files and perform a wide variety of data compression operations. This includes an ability to add, move, extract, delete, update, test, refresh a group of files or folders by a single operation; save or load zipped data from stream; add compressed data from stream. What's more, ZipForge.NET allows compressing files, buffers, streams, strings and repairing corrupted archives. Users will also benefit from its unique Transaction System. This technology delivers a very fast and easy way to update archive files, while providing data integrity like a reliable database system. ZipForge.NET is written entirely in 100%-managed native C# code and takes advantage of all the safety and reliability benefits of the .NET framework. There is a well-designed component interface, plenty of code samples and demos for C#, VB.NET and Delphi.NET. Thanks to all this, the component is easy to incorporate into an application. At any stage of using the component, customers can rely on a quick and knowledgeable response from the technical support team that will help to resolve any problem in less than a few hours. Read the detailed information at www.componentace.com/.NET_zip_component_zipforge.htm Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120846
  - 11
    - Get day name given year, month and day number Hmm. Is there a way to get the day name (ie Monday) given a year, month and day number? Thanks, Chris Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120842
  - 12
    - The security alert dialog does not appear when my program sends UD I would like the user to be able to choose "Unblock" on the security alert dialog when my application attempts to send a UDP packet for the first time. However, the securlty alert dialog does not appear. I have to tell the user (when running the app for the first time) to manually add my app to the exceptions list in the firewall. Why isn't windows prompting the user with the security alert dialog? I have the "Display notification..." check box checked, and it still doesn't appear. Is there something I should do before sending the packet? Doesn't the security alert work with UDP packets? Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120841
  - 13
    - Saving a locally created Bitmap Seems like this ought to be an easy one. Essentially, using managed C++, I'd like to be able to create a Bitmap locally, set the pixels to particular colors, and save the result. Everything seems to work fine except that upon calling the Bitmap's Save function I always get a status of "FileNotFound" and it creates a file with 0 size. The Code: void CChildView::Test() { Gdiplus::Status stat; Bitmap bmp(2048,2048,PixelFormat24bppRGB); Color red,grn; red.SetFromCOLORREF(RGB(255,0,0)); grn.SetFromCOLORREF(RGB(0,255,0)); int i,j; for(i=0;i<2048;++i) { for(j=0;j<2048;++j) { if(i==j) stat=bmp.SetPixel(i,j,grn); else stat=bmp.SetPixel(i,j,red); } } CString sPath("c:\\test.png"); WCHAR wszPath[256]; MultiByteToWideChar( CP_ACP, 0, sPath, sPath.GetLength()+1, wszPath, sizeof(wszPath)/sizeof(wszPath[0]) ); stat=bmp.Save(wszPath,&ImageFormatPNG); } I should mention that yes, Gdiplus is initialized prior to entering this function. Status (stat) remains "OK" until the Save operation, where it changes to "FileNotFound". What am I missing here? I've had the same problem with different file types (BMP rather than PNG, for instance). Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120839
  - 14
    - Select Data Source Dialog - Odbc Hi, I am creating my own customize ODBC dialog box (in Vb.NET) just like as we have when we run MSDASC-> DataLinks -> Prompt New(). To acheive this I am using Odbc32.dll and Odbccp32.dll by this I can create DSN by using SQLCreateDataSource and can fetch the name of the available DSNâ??s but I am facing problem in case of Build Connection Stringâ?¦ In the standard DataLink window when we click on the Build button it will open a dialog from where user can choose there DSNâ??s or can create a new oneâ?¦ and after the completion of this operation it returns a connection string thatâ??s became visible in connection string text box of the Datalink window... the same functionality I want from my code. If any one knows which API method should I need to call here or what will be the process for getting the same. It will be very very helpful to me. Thanks Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120834
  - 15
    - Unable to install DotNet 2.0 Framework on W2k3 Standard Server After initial page of installer comes up, it shifts to the following message: The following error occurred during setup: The installation package or a needed file could not be opened. Verify that the package exists and that you can access it. I have used this particular installer (dotnetfx.exe) on several different servers successfully. Does anyone have a clue as to what is missing? How can I determine what is missing? Thanks, Bill Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120833
  - 16
    - ILASM for Compact Framework 2 I already asked in CF group, but nobody was able to help me - I hope someone here would know the answer... I need to compile some IL code to CF2 class library (.dll). I just tried it, got the dll using something like "c:\WINNT\Microsoft.NET\Framework\v2.0.50727\ilasm.exe /DLL mycode.il". The DLL looks ok on first sight (I can see all the classes using reflector), but if I add the assembly to my SmartDevice CF2 project in VS2k5, I'm not able to use the classes. The reference is added without any error messages, but the compiler doesn't recognize names of the classes in the assembly if I try to use them... If I try to use the assembly from WinForms project, everything works ok. So it looks like the ilasm generates just full-framework compatible assembly. Is there any special ilasm.exe tool for compact framework? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120830
  - 17
    - Datagrid Update Any body please send me information regarding datagrid data Update in .net 2.0 Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120829
  - 18
    - Auto mail from SQL Hi can any one tell me that how i can send email to my registered clients from sql store procedure if they meet some specific critaria. and this store procedure will automaticelly execuate after every 10 minutes and check the database. if any client meet the critari specified a mail will be send to that client. thanx Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120825
  - 19
    - How to improve performance of Queue accessing between 2 threads? Dear Guys, I write program that sharing Queue between 2 threads which 1 thread add data to Queue. And another thread get data from Queue to process. My situation is if there are alot of data to add (like loop to add). The 2nd thread which try to get data from Queue cannot access or rarely to access that Queue which make the program has low performance. How can I do to improve this situation? I want 2nd thread can access as fast as possible once Queue is not empty. Here is some snippet code:- Thread#1 For i as Integer = 1 To 1000 SyncLock _queue.SyncRoot _queue.Enqueue(i) _newItemEvent.Set() End SyncRoot Next Thread#2 Dim item As Integer While _queue.Count <= 0 Thread.SpinWait(0) End While While _queue.Count > 0 SyncLock _queue.SyncRoot item = DirectCast(_queue.Dequeue(), Integer) .... End SyncLock End While Thanks, Thana N. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120824
  - 20
    - .NET Snippets Hello, I would like to show you my new web page. On this site you can publish and download .NET code - snippets for free. Please tell me your opinion, and have much fun to publish new snippets. This is the Link: http://www.dotnet-snippets.de/dns_en/Default.aspx Jan Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120822
  - 21
    - .NET Codesnippets Hello, I would like to present my new web page to you. On this site you can publish and download .NET code - snippets. Please tell me your opinion, and have fun to publish new snippets. This is the Link. Jan Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120821
  - 22
    - Dirty property value persist problem in asp.net custom control Hi, I created a custom control, and encountered a dirty property value persistence problem. I created a property with a custom class type, call SQLSettings which holds the SQL connection parameters, the class as follows: public sealed class SQLSettings { private string serverName; ....... public SQLSettings() { this.serverName = string.Empty; ...... } [NotifyParentProperty(true)] public string ServerName { get { return this.serverName; } set { this.serverName = value; } } .................. And, I also created an mapping TypeConverter and UITypeEditor classes to handle the design-time founctinality. The property I created in my conbtrol as follows: [BrowsableAttribute(true)] [CategoryAttribute("Behavior")] [BindableAttribute(true)] [NotifyParentProperty(true)] [EditorAttribute(typeof(SQLSettingsUITypeEditor), typeof(UITypeEditor))] [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)] [TypeConverter((Type)typeof(SQLSettingsTypeConverter))] [PersistenceModeAttribute(PersistenceMode.InnerProperty)] public SQLSettings SQLSettingsData { get { return this._sqlSettings; } set { this._sqlSettings = value; } } They all works fine when first set value to this property, I can see the persisted data showed in .aspx file. When I go back to design view and update the property value via my UITypeEditor, I can see the value already updated in VS.NET properties browser. But when I turn to see .aspx file in code view, I didn't see the dirty property value updated in .aspx file. When I turn to design view, the updated property value is lost, it remain keep the first persisted value. How about to solve this problem? Any idea? Thank you for your kindly help. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120820
  - 23
    - WebRequest Exception: "The attempted operation is not supported for the type of object referenced" We have written an asynchronous download class that uses the WebRequest to perform downloads. Things are working fine in-house, and it's fine for the vast majority of our users, but there is an increasingly large of people who are getting the following exception: Exception Type: System.Net.Sockets.SocketException ErrorCode: 10045 SocketErrorCode: OperationNotSupported NativeErrorCode: 10045 Message: The attempted operation is not supported for the type of object referenced Doing a search on that phrase ("The attempted operation is not supported for the type of object referenced") almost immediately led me to this page: "How to determine and recover from Winsock2 corruption" http://support.microsoft.com/kb/811259 Using the instructions on that page has worked for 100% of the users with the problem! At first I though, "Great!" But now we're seeing a lot of these, and I'm starting to think that since it's not that isolated, it might not really be a true "problem" on their machines. It might be a firewall program or some other incomptaibility. Have other people seen this before? Do you know of something "innocuous" that could be causing the SocketException? Any hints, guesses, or shots in the dark would be greatly appreciated. Many thanks, Taylor Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120817
  - 24
    - 'System.InvalidOperationException' An unhandled exception of type 'System.InvalidOperationException' occurred I am getting this error when running the built executable directly from the bin folder -- however, it doesn't give me the error when I run from within the IDE (DEBUG or RELEASE). It does seem to run fine on another computer. System.InvalidOperationException was unhandled Message="An error occurred creating the form. See Exception.InnerException for details. The error is: The type initializer for 'Falcon.PrintConsole.modGlobal' threw an exception." Source="Falcon.PrintConsole" StackTrace: at Falcon.PrintConsole.My.MyProject.MyForms.Create__Instance__[T](T Instance) at Falcon.PrintConsole.frmMain.Main() Help? Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120816
  - 25
    - Cannot create ActiveX object (on Windows 2000) I have made a small interop function that uses Acrobat Distiller. It works smothly on all the XP machines, but when I try to run it on a Windows 2000,I get this error: System.Exception: Cannot create ActiveX component. at Microsoft.VisualBasic.Interaction.CreateObject(String ProgId, String ServerName) at MediaBuilder.Utils.PDFCreator.PDFCreator.Main(String[] args) in C: \Visual Studio Projects\Utilities\PDFCreator\Main.cs:line 31 And line 31 looks like this: objDist = (ACRODISTXLib.PdfDistiller) Microsoft.VisualBasic.Interaction.CreateObject ("PdfDistiller.PdfDistiller",""); What is the difference between running this under XP and 2000? The odd thing is, that I can compile it with out errors on the 2000, it is just when I run it, I get this error. Could it be because of the call/use of Microsoft.VisualBasic.Interaction.CreateObject, that should work W2KSP4. I have also tried DCOM configuration (http://support.microsoft.com/kb/q183607), but even with even with this, I still get the error. Tag: Optimising data retrieval display ie negating Postbacks.. ?? Tag: 120814

Hi

Scenario,.. I have several LBoxes on an ASPX page, each of which's data is
dependant on the selection made of the preceding one,
eg States, Regions and Cities,... Select a state and server code executes
on Postback to retrieve Db data of regions within the state, and on region
selection, to rerieve towns/cities within that.

It runs within a frameset currently, but the continual page refresh and time
are things I would like to avoid.

Any links or suggestions ... i guess it will have to do with script (not my
strong point yet).

thanks
Neal

--
Neal Rogers
University of Cape Town

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