filter in DataTable.Select

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 - 1
 - Embedded Resource Name Specification SUMMARY: I want to override the default embedded resource naming convention and excercise complete control over the name of an embedded resource within an assembly. DETAIL: For non-dependent files, visual studio names a resource according to the convention <default namespace>.<FolderName>.<FileName>. How can some other name for a given resource be specified? I am willing to manually modify the project file if necessary. Thank You, Chris Moore Tag: filter in DataTable.Select Tag: 123237
 - 2
 - Problem with using AppDomain/Assembly Loading in Queued Component Hi, After many searches online and cannot find the right solution for my issue, I decided to post my question here. If you can help or know something on this, please give me some hints? Thanks in advance ! ISSUE: I have a queued component ( COM+ serviced component and written in C#) that needs to load my .NET assembly dynamically into the AppDomain. Code goes like this: AppDomain newAppDomain = new AppDomain (); newAppDomain.CreateInstanceAndUnwrap("myClassName","myProjectNameSpace.myClass"); *** Note: myClass assembly is C# and I generated tlb for it and loaded the assembly into GAC and registry (via regasm). *** When running this queued component, I always got error "System.IO.FileNotFoundException: File or assembly name myClassName, or one of its dependencies, was not found." Looks like DLLHOST is looking into C:\WINDOWS\system32\ for my dll while my dll is actually in another directory (Note: the dll of queued component and my assembly are in same bin directory). What needs to be done to avoid this error ? Some error log: System.IO.FileNotFoundException: File or assembly name myClassName, or one of its dependencies, was not found. File name: "myClassName" Server stack trace: at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Boolean isStringized, Evidence assemblySecurity, Boolean throwOnFileNotFound, Assembly locationHint, StackCrawlMark& stackMark) at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Boolean stringized, Evidence assemblySecurity, StackCrawlMark& stackMark) at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark) at System.Activator.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo, StackCrawlMark& stackMark) at System.Activator.CreateInstance(String assemblyName, String typeName) at System.AppDomain.CreateInstance(String assemblyName, String typeName) at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName) at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(MethodBase mb, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs) at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName) at myClassName.MyMethod..ctor() === Pre-bind state information === LOG: DisplayName = myClassName (Partial) LOG: Appbase = C:\WINDOWS\system32\ LOG: Initial PrivatePath = NULL Calling assembly : (Unknown). === LOG: Application configuration file does not exist. LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind). LOG: Post-policy reference: myClassName LOG: Attempting download of new URL file:///C:/WINDOWS/system32/myClassNameDLL. LOG: Attempting download of new URL file:///C:/WINDOWS/system32/xhparser/myClassName.DLL. LOG: Attempting download of new URL file:///C:/WINDOWS/system32/myClassName.EXE. LOG: Attempting download of new URL file:///C:/WINDOWS/system32/xhparser/myClassName.EXE. ============== END ======================= Tag: filter in DataTable.Select Tag: 123235
 - 3
 - Upgrading from .NET Framwork 1.1 to 2.0 Hi, We have an app that have been compiled to use .NET Framework 2.0. It runs fine from the server but from the workstation it generates an error message something like "This program could not start because the program configuration is wrong. If you reinstall the program it can solve the problem". I suppose it is .NET Framework that generates this message. In .NET Framework 1.1 we used to set access to full trust for the local intranet. I can not see such an configuration option for .NET Framework 2.0. Any idea what is the problem? Tag: filter in DataTable.Select Tag: 123228
 - 4
 - Duplicate Accelerator keys Hi, Ok here is the scenario. I have an application with a lot of forms and some of them have a lot of controls on them. Inevitably duplication of accelarator keys has happened. The duplication is only between the form level controls and the menus. so I would like suggestions to work around this problem. -can I provide multiple keys as accelrator keys (like E&x&it so that pressing alt+x+i will enable this menu) Tag: filter in DataTable.Select Tag: 123225
 - 5
 - Dupicate accelerator keys .. Hi, Ok here is the scenario. I have an application with a lot of forms and some of them have a lot of controls on them. Inevitably duplication of accelarator keys has happened. The duplication is only between the form level controls and the menus. so I would like suggestions to work around this problem. -can I provide multiple keys as accelrator keys (like E&x&it so that pressing alt+x+i will enable this menu) Tag: filter in DataTable.Select Tag: 123224
 - 6
 - Missing referenced assemblies in compiled dll ... Hi, I have a project that references a couple of other dll:s. After I compile the project I use IL DASM to have a look on the Manifest of the compiled dll. The thing is that not all referenced dll:s are in there (I'm missing 3 of 7)! My problem is that I need to find all referenced assemblies by reflection (using GetReferencedAssemblies) ... Is there a explination to this? I could really need some help and ideas with this ... Richard Tag: filter in DataTable.Select Tag: 123218
 - 7
 - WSE910 and 'Root element is missing.' I am having trouble with WSE3 and domain authentication\authorisation for a web service. When using a the 'NETWORK SERVICE' account for the application pool in IIS 6.0 the web service work perfectly correctly, we are able to call the web service end point and we can authenticate through our custom WSE authentication token manager, but when we switch over to a domain service account we have created to run the application pool we get the following error: 'WSE910: An error happened during the processing of a response message, and you can find the error in the inner exception. You can also find the response message in the Response property.' The inner exception states: 'Root element is missing.' The domain account is a member of the IIS work process group on the local box, it as the required security permissions for the directory where the web service is installed. What is very strange is that when this service account was made a domain admin temporarily the call worked perfectly fine. So the question is what permissions does WSE3 require so that we can get our domain service account to work correctly. Cheers in advanced Ollie Riches Tag: filter in DataTable.Select Tag: 123215
 - 8
 - css failure on postback Hello all, I develop aspx pages for internal use. We use IIS 6, .net 2 and IE 6. In the head of the clientcode I call a css file like "@import url(../CSS/Styles.css);" All this runs fine. When I pubish the site to the server and call it from a clientmachine everything looks fine as well. But when there is a postback all styles are gone and the site is nearby unuseable. On the next postback it mostly looks fine again. Do I use the wrong way to implement the css or do I have to update the .net Framework with something? Thanks for help. Tag: filter in DataTable.Select Tag: 123210
 - 9
 - C# to C++ port Hi everyone, We have a dll component developed in C# and used by the other projects (exe) written in C#. This component has been tested and proved to be very robust component and so we are going to re-use it in another application (very large code base) which has been already written in unmanaged C++. What is the best strategy between the following two options: 1. Write a managed C++ wrapper around the C# component and use that wrapper in our unmanaged C++ project. 2. Port the C# component completely to an unmanaged C++ component and then use it in our unmanaged C++ project. The main advantage of option 1 is that it seems much quicker and we can also benefit from .Net framework library without having to re invent the wheel or use other 3rd party libraries. The main advantage of option 2 is that we are not going to get involved in the potential problems involved in mixing managed and unmanaged codes. Does anyone have any other ideas (maybe option 3 ...) or see another pros and cons in going with either option 1 or option 2? Any help would be appreciated Luca. Tag: filter in DataTable.Select Tag: 123206
 - 10
 - excel hi, i did not the office version of the system in which the application is going to be deployed. is there any way of opening an excel file which is office independent. My requirement is that i have to open a template file which is in the server. regards, kalaivanan Tag: filter in DataTable.Select Tag: 123203
 - 11
 - XMLSerialization of complex content I would like to serialize some XML where one of the elements contains html content: <MyXML><DataContent>ABC News Online</DataContent><MyXML> However the XMLSerializer gives me the following exception: System.Xml.XmlException: Unexpected node type Element. ReadElementString method can only be called on elements with simple or empty content I would like the serializer to read out all the HTML content from the <DataContent> element. My class looks like: using System.Xml.Serialization; namespace ABC.MyXML_5.BL { [XmlRoot("MyXML")] public class MyXML_5 { private string element_datacontent; [XmlElement] public string DataContent { get { return element_datacontent; } set { element_datacontent = value; } } } } My code looks like: //10.Create some XML StringBuilder l_strBldrXML = new StringBuilder(); l_strBldrXML.Append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>"); l_strBldrXML.Append("<MyXML>"); l_strBldrXML.Append("<DataContent>"); l_strBldrXML.Append("ABC News Online"); l_strBldrXML.Append("</DataContent>"); l_strBldrXML.Append("</MyXML>"); //20.Put XML into an in memory stream Stream l_StreamTest = new MemoryStream(Encoding.GetEncoding("Windows-1252").GetBytes(l_strBldrXML.ToString())); //30.Deserialize into instance of a class XmlSerializer l_Serializer = new XmlSerializer(typeof(ABC.MyXML_5.BL.MyXML_5)); ABC.MyXML_5.BL.MyXML_5 l_MyXMLDocument; l_MyXMLDocument = (ABC.MyXML_5.BL.MyXML_5)l_Serializer.Deserialize(l_StreamTest); l_StreamTest.Close(); Assert.IsTrue(l_MyXMLDocument.DataContent == "ABC News Online"); Tag: filter in DataTable.Select Tag: 123201
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 - calendar control I have a calendar control that has runs a longish bit of code in the ValueChanged event. How do I get the control to repaint before running the code. At the moment the calendar month view stays active while the code is running. Thanks in advance VS 2005 / C# / CF2 Tag: filter in DataTable.Select Tag: 123195
 - 13
 - TcpClient.Connect causes three first chance exceptions Hi all, I've got a client/server application and just wanted to ensure that this is expected behavior. I recently set the following configuration in Visual Studio: Debug->Exceptions->Break Into Debugger for the CLR Exceptions And when my debugger hits the TcpClient.Connect statement and the server is not available - I get the following three first chance exceptions: A first chance exception of type 'System.Net.Sockets.SocketException' occurred in system.dll Additional information: The requested name is valid and was found in the database, but it does not have the correct associated data being resolved for ---------------- A first chance exception of type 'System.Net.Sockets.SocketException' occurred in system.dll Additional information: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond ---------------- A first chance exception of type 'System.Net.Sockets.SocketException' occurred in system.dll Additional information: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond ---------------- I handle the exception and my code continues on its merry way - I just wanted to see if anyone could provide some insight on this. Thanks, Novice Tag: filter in DataTable.Select Tag: 123188
 - 14
 - "Start external program" no longer works in VS2003 once 2.0 framework installed I am developing a component in .Net 1.1, and want to debug it using the "start external program" of the debugger in the IDE. The program I want to start references both 1.1 and 2.0 components. The problem is that when I launch this from VS2003, the external program starts only for a moment and then bails out of memory with no error, and the ide returns to a stopped state awaiting my input. If I remove the 2.0 framework, at least the external app will start up and stay in memory, but I will get the error (as expected) that some pieces could not be found (i.e. pieces of the 2.0 framework). Should not VS2003 (which is based on framework 1.1) be able to run under 2.0 as they are backward compatible??? Thanks for your help, Marcus Tag: filter in DataTable.Select Tag: 123184
 - 15
 - BadImageFormatException Hi I have received an error message from a user of my software, which is an Add-In for Visual Studio 2005. The user is using a French version of Visual Studio. A BadImageFormatException occurs, and it appears that the FileName property in the BadImageFormatException structure is an empty string. The stack trace is as follows: à System.ModuleHandle._GetPEKind(Int32& peKind, Int32& machine) à System.ModuleHandle.GetPEKind(PortableExecutableKinds& peKind, ImageFileMachine& machine) à System.Reflection.Module.GetPEKind(PortableExecutableKinds& peKind, ImageFileMachine& machine) à System.Reflection.Assembly.ComputeProcArchIndex() à System.Reflection.Assembly.GetName(Boolean copiedName) à System.Reflection.Assembly.GetName() à System.ComponentModel.Design.RuntimeLicenseContext.CaseInsensitiveManifestResourceStreamLookup(Assembly satellite, String name) à System.ComponentModel.Design.RuntimeLicenseContext.GetSavedLicenseKey(Type type, Assembly resourceAssembly) à System.ComponentModel.LicenseManager.LicenseInteropHelper.GetCurrentContextInfo(Int32& fDesignTime, IntPtr& bstrKey, RuntimeTypeHandle rth) à MultiLang.modGlobalDbUtil.OpenGlobalDatabaseConnection() à MultiLang.ctlToolWindow.InitAddInWindow(DTE newVal) à MultiLang.Connect.OnConnection(Object application, ext_ConnectMode connectMode, Object addInInst, Array& custom) The last function in my software is MultiLang.modGlobalDbUtil.OpenGlobalDatabaseConnection which opens an ADO database connection to an mdb (access 2000) database file. This is ADO and not ADO.NET. I have simply no idea why execution is entering LicenseManager code. I have tried putting a breakpoint in this module (via the disassembly window) but as far as I can tell it is not entered on my system. I am totally baffled by this error and would appreciate any help. Thanks in advance, Phil Tag: filter in DataTable.Select Tag: 123180
 - 16
 - System.Timers.Timer stops firing event I have a Windows Service with a Timer object with an interval of 500 ms, in each event the windows service starts a new thread, up to a limited number of threads, and does some work. It works fine as to the users requirements, but sometimes freezes. The Service is running, its process is visible on Task Manager as usually, no events on the Event Log are related to the service, but the work is not done. After some tests I foun out that the the code associated with the OnTimer Event stops being executed with no apparent reason. I'm clueless.... :( Some code: public class QueueHandler : System.ServiceProcess.ServiceBase { private System.ComponentModel.Container components = null; private System.Timers.Timer timer = new System.Timers.Timer(); private Thread[] serviceThreads; protected override void OnStart(string[] args) { serviceThreads = new Thread[25]; int interval = 500; string autoThreads = "no"; timer.Elapsed += new ElapsedEventHandler(OnTimer); timer.Interval = interval; timer.Enabled = true; } protected void OnTimer(Object Source,ElapsedEventArgs e) { int x = GetNextFreeThread(); if (x >= 0) serviceThreads[x].Start(); } private int GetNextFreeThread() { int threadID = -1; MessageProcessor mProcessor = new MessageProcessor(); ThreadStart tStart = new ThreadStart(mProcessor.ProcessMessage); for (int y = 0;y<serviceThreads.Length;y++) { //if thread slot is free instaciate new thread if(serviceThreads[y] == null || serviceThreads[y].ThreadState == System.Threading.ThreadState.Stopped) { threadID = y; serviceThreads[threadID] = new Thread(tStart); serviceThreads[threadID].Name = "QueueThread_" + y.ToString(); serviceThreads[threadID].IsBackground = true; serviceThreads[threadID].Priority = ThreadPriority.Lowest; break; } } return threadID; } Tag: filter in DataTable.Select Tag: 123171
 - 17
 - Programming a "Send to" app If I put a shortcut to an app in the Send To folder, then I can select one or more files in Windows Explorer, right-click on the files, select Send to -> MyApp, and my application will run with the selected file paths supplied as a command line argument. The problem with this is that the command line has a limited length. I can only select 15 or so files to send to my app without truncating the command line. I've noticed that many of the "built in" items in the Send To folder accept an (apparently) unlimited number of selected files. What is the mechanism that they use to get the selected file list, and can I write a .Net app that does the same thing? TIA - Bob Tag: filter in DataTable.Select Tag: 123167
 - 18
 - Forms Auth fails after moving to another machine The app is running fine on my development machine at work as well as on our test deployment server. It's using the standard ASPNETDB.MDF in the app_data folder and sqlexpress is up and running. I can attach the file and look at the tables. The login1.loggedIn event fires, so the authentication appears to be working. But instead of going to the correct page, it just shows the logon page again. Any idea about why it's failing is welcome. Tag: filter in DataTable.Select Tag: 123157
 - 19
 - acquiring standard out, standard error Hi, I have managed to acquire the standard out & error streams of an app by starting it with System.Diagnostics.Process. Works great. How do I acquire the standard output & error & in streams of an already running application, for instance, a service. Basically I need to monitor the standard out & error streams of a running app from another app. Thanks Paul Tag: filter in DataTable.Select Tag: 123156
 - 20
 - Target the Framework version from 2.0 to 1.1 Dear all, I have encountered a problem of "DragDrop registration failed" problem in my .NET 1.1 dll because of the assembly binding is always going to .NET 2.0. Therefore I tried to specifiy the runtime version and redirect those bindings in MyModule.dll.config. The binded assemblies, however, are still in .NET 2.0, according to both VS.NET 2003's output log and VS.NET 2005's fuslogvw. Meanwhile, they also logged compiling and linking processes. At that stage, linked assemblies are in version 1.1 correctly. My question is, does it means that configurations of runtime version and assembly binding redirection do not work backward from 2.0 to 1.1? Thank you for your precious time. Best Regards, Mike Tag: filter in DataTable.Select Tag: 123143
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 - Using webproxy. Hi all, I want to send webrequest using webproxy so that i can hide my Pc's ip address from server. So i decided to use proxy and set that proxy details to webrquest using webproxy. My question is if i am using proxy for sending request what details of proxy server will get send to webserver?. what if that proxy server's access is block by webserver. But through my pc webrequest is accessiable. In that case what should i do? If i am wrong in concept please correct me. thanks in advnace. Tag: filter in DataTable.Select Tag: 123139
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 - Problem with transprancy and opacity When I give my form a white background, make the transparency key white, and have the opacity set to 100% (1) everything works fine. However, if I change the opacity to 50% (.5) the rather then have a form that is transparent where the white is I get a foggy white. Is there a fix for this, I want the form to be 50% opacity and the transparency to remain fully transparent. Thanks, Rob Tag: filter in DataTable.Select Tag: 123135
 - 23
 - vb.net not responding Thanks in advance for any help. I have a Windows form I have written in vb.net (2003 - Standard Ed.). It reads an xml file, populates a datagrid and updates back to the xml file when changes are mde on the datagrid such as additions or record modifications. I go to build with F5 and the hourglass pops up and doesn't go away even though the Windows Task Manager doesn't show "Not Responding". The build is listed as 1 Successful buildwith no erros. Any ideas on this one? Here is my code: Imports System.Data Imports System.Xml Public Class Form1 Inherits System.Windows.Forms.Form #Region " Windows Form Designer generated code " #End Region Dim xdd As XmlDataDocument Dim ds As DataSet Private Sub btnLoadXml_Click(ByVal sender As System.Object, ByVal e As _ System.EventArgs) Handles btnLoadXml.Click Dim xtr As XmlTextReader = _ New XmlTextReader("C:\Documents and Settings\Cheryl&Brian\Desktop\XMLforProject.xml") xdd = New XmlDataDocument ds = xdd.DataSet() ds.ReadXmlSchema(xtr) xtr.Close() xtr = New XmlTextReader("C:\Documents and Settings\Cheryl&Brian\Desktop\Books.xml") xtr.WhitespaceHandling = WhitespaceHandling.None xdd.Load(xtr) dgXML.DataSource = ds dgXML.DataMember = "Book" xtr.Close() End Sub Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As _ System.EventArgs) Handles btnSave.Click Dim xtw As XmlTextWriter = New XmlTextWriter("C:\Documents and Settings\Cheryl&Brian\Desktop\XMLforProject.xml", System.Text.Encoding.UTF8) xtw.Formatting = Formatting.Indented xdd.WriteTo(xtw) xtw.Close() MessageBox.Show("The XML file has been successfully updated !") End Sub End Class Tag: filter in DataTable.Select Tag: 123130
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 - What framework is running in this scenario? I have a VB6 application that references a few .Net 1.1 components, and one 2.0 component. Does that mean that all will be running under 2.0? Is there any way to force the 1.1 pieces to run under 1.1, and the 2.0 to run under 2.0? I know about setting a config file to force a certain framework, but I think that is only good for the entire application. Thanks Tag: filter in DataTable.Select Tag: 123124
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 - ClickOnce Nightmares I'm trying to deploy a clickonce application using the command line (so that I can have it in a batch process). I have the following problems/questions. Please, if anyone can help, I'd appreciate it. I've managed to deploy the application using the instructions by microsoft, here: http://msdn2.microsoft.com/en-us/library/xc3tc5xx.aspx This is all peachy keen. Works fine except... 1 - There is no "setup.exe" file as occurs when deploying through the IDE. Why is this and can I get one? 2 - It cannot deploy over the network. Only locally (in other words, installing from \\mycomputer\public fails, but c:\public succeeds). 3 - When it is installed it doesn't give me an icon in the "Start\Programs" menu nor is it listed in the "Add/Remove Programs" when installed. I was wondering, somewhat, if it actually installed at all except that on install it runs (as it has been instructed to do) and the exe is installed in my user directory. Please help. What am I missing? If you have any questions feel free to ask. I need to get this out the door soon so I will be checking this post regularly. tia, rts. Tag: filter in DataTable.Select Tag: 123121
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 - HttpWebRequest ThreadPool usage - strange behaviour I posted this at dotnet.general a few days ago, but as far as there was no answer, I'll repost it here. I you think that there is even more appropriate group for this, please let me know, and I'll repost. Thanks. <Repost> Hi, I read a lot of articles about deadlocks and ThreadPool overloading when a lot of WebService or WebRequests are made from and ASP.NET applications. In most of these articles and examples there is a statement, that HttpWebRequest.GetResponse() call is always executed asyncronously in v. 1.x of the network. I used Reflector to examine this, and indeed, the code looks like: BeginGetRequest(...); ...... EndGetRequest(); Now, I created a test console application, which invokes a simple web service. This service only invokes Thread.Sleep for the number of seconds passed as parameter. Note - this is for .Net v.1.1 SP1. My test application starts 3 threads (not from the threadpool). The first one prints on console the current ThreadPool free threads. And the other 2 make invocation of the sample web service (not using a proxy, but pure GET request, using HttpWebRequest class), requesting delays of 10 and 20 seconds. Now, the strange thing is, that I do not see any thread of the ThreadPool used while waiting for the HttpResponse, I.e. this behaves very differently from what I read so far about how HttpRequests are made. I tried to invoke HttpWebRequest in 3 different ways (just comment and uncomment the corresponding 2 lines in the Main method): 1. A custom thread just invokes the synchronous GetResponse method - no threadpool usage is visible, even as per the articles I mentioned, it should translate in async invocation internally. 2. A threadpool thread invokes synchronous GetResponse - then obviously a threads from the pool are used, but only the ones, which make the call, but still not visible another threadpool thread which is used by the GetResponse. 3. A custom thread, which invokes async GetResponse (with BeginGetResponse/EndGetResponse), as well as async reading of the response stream. Still I can not see a threadpool thread to be used. Can somebody explain this behaviour? Why this sample works not like it should be? If all these articles are wrong, should I worry if I have a async web service, which internally invokes a 100-200 HttpRequests per invocation. I may have more than 300 invocations of that service in the same time? Actually, what I'm after is a web service, which will be used by more than 300 clients at the same time, which by itself retrieves 100-200 web pages per request. I want to speedup the process, and to use all available resources to fetch as many pages as possible at a time using threads. At the following URL you can find a zip with the source files I used. You need to set your IIS virtual directory to map to the test web service: http://216.17.90.93/ThreadTest.zip These are the articles I read on the topic: <http://msdn.microsoft.com/msdnmag/issues/04/12/NETMatters/> <http://www.deez.info/sengelha/blog/2005/03/03/beware-threadpools-and- httpwebrequest/> <http://msdn.microsoft.com/library/default.asp?url=/library/en- us/dnservice/html/service07222003.asp> <http://msdn.microsoft.com/msdnmag/issues/03/06/Threading/> Cheers Sunny Tag: filter in DataTable.Select Tag: 123119
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 - Content-Type of MailMessage Why can't we change the content-type setting of a System.Net.Mail.MailMessage? We can change this value for Attachments, but not for the message itself... It's the only thing that prevents me from creating signed/encrypted messages... I can sign the message, add the smime.p7s but I can't change the message content type to multipart/signed... And adding the header doesn't help, the SmtpClient adding a Content-Type automatically... In fact, if the MailMessage would contain the same header properties (Content-xyz) as the Attachment, it would give a lot of flexibility... As for backward compatibility, not setting them would leave the default on, yes? In the meantime, I'll have to try another workaround: put the encrypted/signed message in an attachment... Tag: filter in DataTable.Select Tag: 123117
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 - How to get the domain name from a WinForm UserControl hosted in Internet Explorer I have developed a User Control (in .NET 2.0) that runs hosted inside Internet Explorer. like in these articles http://msdn.microsoft.com/msdnmag/issues/02/01/UserCtrl/ http://support.microsoft.com/?kbid=892466 Is there an easy way to reference the HTML Document "parent" of this control and ask it for the domain? I could not find any way to reference the document that worked (ex Parent or Container property) Is there a way to ask the IEHost.dll that is hosting this control in IE? Is there a way through the security model to ask the Assembly if it has been loaded with restricted permissions and if so why? and somehow get to the domain it was pulled down from.... Any ideas? Thanks in advance, Kelly Greer kellygreer1@nospam.com change nospam to yahoo Tag: filter in DataTable.Select Tag: 123116
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 - Configure service's credentials as NETWORK SERVICE Hi there, One of our admins has reconfigured a 3rd party Window Service's credentials to custom ones. I'd like to switch it back to NT AUTHORITY\NETWORK SERVICE. Is this possible without reinstalling the entire application, e.g. from command line or via a utility? Thanks, -Oleg. Tag: filter in DataTable.Select Tag: 123115
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 - Some or all identity references could not be translated I get and error â??Some or all identity references could not be translatedâ?? when executes the code System.Security.Principal.SecurityIdentifier.Translate. It appears this happens to users that have been logged in for a long time. It appears our users are in the habit of not logging out for long periods of time. If the user logs out and then back in the error no longer occurs. Does any one have any idea what is happening here? Is the some AD setting that causes tokens to expire after some period of time? Code snippet: WindowsIdentity id = WindowsIdentity.GetCurrent(); IdentityReferenceCollection irc = WindowsIdentity.GetCurrent().Groups; string[] strArray = new string[irc.Count]; int t = 0; foreach (IdentityReference ir in irc) { IdentityReference account = ir.Translate(typeof(NTAccount)); strArray[t] = account.Value; t++; } -- EqDev Tag: filter in DataTable.Select Tag: 123114
 - 6
 - Strange Performance Counter performance problem in Windows Service application Hello All, I experience a strange problem I do not how to approach. My windows service application uses several performance counter. Before when staring the service deletes category and attempts to recreate it. *If* the category previously existed and has been deleted prior to recreation an attempt to create a counter causes Service Manager timeout after 30 sec. So, category gets deleted, but it can not be recreated. I modified my service so it deletes category upon termination, but then it fails during the restart while checking if the category exists. It is completely weird. Now, the really strange part: the same code executed as a console application with *the same security credentials* executes momentarily. Sample code attached below. The code uses .Net 2.0 methods but the same issue can be seen in .Net 1.1. Did anyone experience a similar issue? Is there any known solution? Thank you, Tomasz Const ThisServiceName As String = "My Service" Trace.WriteLine("Checking performance counters category.") If PerformanceCounterCategory.Exists(ThisServiceName) Then Trace.WriteLine("Deleting performance counters.") PerformanceCounterCategory.Delete(ThisServiceName) Trace.WriteLine("Performance counters deleted.") End If WriteToLog("Creating performance counters.") PerformanceCounterCategory.Create(ThisServiceName, "", PerformanceCounterCategoryType.MultiInstance, "test counter", "") WriteToLog("Performance counters created.") Tag: filter in DataTable.Select Tag: 123113
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 - Exception profiling? I need to be able to see what exceptions are being raised by an ASP.NET application. I can see from perfmon that our ASP.NET app is throwing hundreds, if not thousands, of exceptions per second but very little is being logged. So what I'd like to do is run a profiler and see exactly what exceptions are being raised and where they are being raised. I've seen several profilers, but all seem to be just heap and/or memory profilers. I haven't found one that will show me exceptions. Does such a tool exist? I know that there is a Profiler API, but I'd rather not dive into writing my own for this one project. Thanks in advance! Tag: filter in DataTable.Select Tag: 123111
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 - Performance of Queue(of T).Enqueue(T) When calling Enqueue, the internal array may need to be reallocated. My question is by how much? In the old MFC array classes, you could tell MFC how many additional elements to add to the array when it needed to reallocate, which greatly boosted performance relative to adding 1 element at a time. Thanks, Mike Ober. Tag: filter in DataTable.Select Tag: 123095
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 - Toolbox tab and custom control Hi, I have developed a custom .NET control. Now, i would like to do the following thing : When user want to add this control to Toolbox, he has to select the *.dll file of my control. Therefore, i would like that automatically, my control : 1. check if a particular Tab already exist (e.g : "AR Components") 2. if yes, custom control install itself on this tab. 3. if no, custom control create this particular tab (e.g : "AR Components"), and install itself there. How can i do that with VC++.NET ? thanks a lot, Alain Tag: filter in DataTable.Select Tag: 123094
 - 10
 - drawbacks of Saving documents to Sql server Hi all, .Net 1.1 Sql server 2000 i am working on a document managment module of my application, all i want to do here is save the documents uplaoded by the user from my winforms over webservices application\ webforms applicatoin to sql server 2000. I have been told saving it on the webserver's file system might be a better way but seems that microsft is gong more towars saving everthing in sql server. So my question to the gurus out there is 1. does any one really have any hands on experience saving documents to sql server 2000 and if so please tell me if u have any kind of performance issues with this. 2. i was told that sql server is kind of a little slow in streaming out the documents from the database, expecially bigger ones when compared to the retriving it from the web server's file system, is this true ? 3. please tell me any other problesm that u might have faced when saving\ retriving files from the database. 4. is sql server 2005 any better in saving and retriving documents from the database. thanks sameer Tag: filter in DataTable.Select Tag: 123093
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 - DataFormats.HTML with foreign character questions Hi, I recently have to process HTML clipboard format (both retrieval and posting) in C# and I have struck some problem when the HTML fragment contains foreign characters like Chinese or real UTF-8 sequence. When I examine the HTML clipboard data from Clipboard.GetData( DataFormats.Html ), the return type is System.String. For most part it is correct except in data between the  and  which should contain UTF-8 sequence. For some reason the return byte sequences are wrong at certain places. I then used the unmanaged code via C++/CLI to retrieve the same data and compared byte-for-byte with that returned from Clipboard.GetData() to see the real difference. They are indeed different. The one that I retrieve using Win32 API GetClipboardData() is the correct one while that from Clipboard.GetData() is corrupted. Does anyone know why Microsoft has chosen to use System.String for this rather than Byte[], which should be more appropriate? In the end, I wrote my own retrieval function in C++/CLI that returns a Byte[] to allow me to use Encoding.UTF8.GetString() to convert the fragment correctly. On posting using Clipboard.SetData(), I have also observed changes in certain byte sequences. So I am writing my own. Is there any logical explanation or has this been dealt with before. I am using .Net 2.0 Thanks. Leon Tag: filter in DataTable.Select Tag: 123088
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 - Why tampered Strong name assembly continue to work? Hi, I am always of the belief that once a strong name assembly is built, you cannot modify it without invoking the verification failure on loading. But the other day, a colleague of mine in the midst of getting something done with the managed Directx library, Microsoft.DirectX.dll version 9.12.589.0, accidentally tripped the time bomb as Microsoft no longer supporting this. He could not stop what he was doing and found with the help of Lutz Reflector the function Microsoft.DirectX.InternalHelper.CheckTimeBomb() and he changed the year using a binary editor from 2006 to 2518. He ran his application and did not receive any TimeBombException and obviously his hacked code works. But it begs the question how a strong name assembly could be hacked in this manner without tripping the verification check? I ran sn -vf on the command line for the Microsoft.DirectX.dll and it failed the verification. Here is the disassembled code of the function to show the change: .method public hidebysig static void CheckTimeBomb() cil managed { .maxstack 4 .locals ( [0] [mscorlib]System.DateTime time1) L_0000: ldloca.s time1 L_0002: ldc.i4 2518 L_0007: ldc.i4.s 10 L_0009: ldc.i4.5 L_000a: call instance void [mscorlib]System.DateTime::.ctor(int32, int32, int32) .... } Is this a security slip up? On a small demo I developed, any tampering of a strong name assembly would fail the verification. Any one has any idea why this works? Thanks. Leon Tag: filter in DataTable.Select Tag: 123085
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 - Component in toolbox, appears and disappears... Hi all, I have a windows forms project, under which i've built several component classes, e.g. extended controls like combobox, textbox and so forth... For me to be able to drag and drop them on a form, i always need to perform the following actions : - On the Toolbox Panel, under Components tab, right click then "Add/Remove items" - Browse to my assembly... "projectname.exe" - Pick up the components listed, added after the browse, from the .Net Framework components tab - Get them added to the toolbox where i'm then able to perform my drag an drop action The problem (if any...) is, sometimes, the components after they get added, remain under the Toolbox panel for weeks and then disappear for unknown reason to me, so i need to perform the same operation described above everytime. So, could anybody explain why this is happening ? Is it because, when the component class gets modified, we must readd it again in the toolbox in order to have the latest version ? Is there any way to add the component so that it remains persistent in the toolbox pane, unless we do a remove explicitly ? Thanks for helping, Mike Tag: filter in DataTable.Select Tag: 123084
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 - Reference in C# hi, C Sharp how to add references so that they are accessible to all the files in that project. Everytime a create a new file, i have to copy all the 'Using' Statement to that new file. In VB.net we do it by going to the Project Properties and the referaces are declared globally. How can it be done in C# TIA Irfan Tag: filter in DataTable.Select Tag: 123082
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 - application_start called (again) when switching domain in same app I'm using application_start for starting Remoting for the application. In iis there are specified several domains for the site i.e.: http://mydomain.dk - http://www.mydomain.dk When shifting between domains - application_start is called again - and this is a problem because Remoting is called twice in the same application - this will result in an error, because the Remote server think its the same which is started again. When called again application variables is not available in the next call of application_start. In Framework 1.1 this is not an issue. Is this a change in 2.0 or is this an error ?? Any suggestions on a work-around ? Regards Flemming -- Wagner Engineering - Solutions 2 make better administration Tag: filter in DataTable.Select Tag: 123080
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 - Desperately need help on Assembly Load Hi, I have written an application in which the main exe sits in, say <Dir1> This application will load using reflection Assembly.LoadFrom of an assembly, say Asm1 which sits inside another completely different directory <Dir2>. Within Asm1, I will then need to load another assembly Asm2 which also sits in <Dir2> But the problem is, everytime I try to do it within Asm2, by using Assembly.Load(assemblyName), but it always could not find it. A colleague of mine suggested using AppDomain, which I then try to create another separate AppDomain using the following command: AppDomain.CreateDomain("Somename", null, <Dir2>, <Dir2>, false); however it always returns an object of type System.Runtime.Remoting.Proxies.__TransparentProxy which when I used, it will always throw an Exception. Does anyone know how to overcome this problem? or suggest any other way? All I am trying to do is so that everytime I call Assembly.Load, it will try to look under <Dir1> as well as <Dir2> Thanks in advance. Any help would be appreciated. Tag: filter in DataTable.Select Tag: 123079
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 - Dotnet under Apple Safari browser Hi All, I am having huge problems with a very simple dotnet framework web page (www.gbab.net/ztest3.aspx) , it does NOT render correctly under Apple's Safari. The DIV's do not align amd float as they should, and do in Dotnet. The page is really, really simple, and it has a CSS and with NO masterpage. I have tried using the following as recommendations made earlier in this Newsgroup:- 1) Adding the following code to the page's Page_PreInit method: if (Request.Browser.Browser.Contains("Safari")){ this.ClientTarget = "uplevel"; } 2) incorporating a Browsercap section in the web.config as per: http://slingfive.com/pages/code/browserCaps/ 3) Ensuring the page is validated as XHTML-compliant standard TML (used http://validator.w3.org/) BUT I STILL GET THE PROBLEM! Safari does not handle CSS and DIV's properly! What bugs me, is that there are some pretty sophisticated Dotnet sites out there that work beautifully under Safari! And I left wondering what it is that I am doing wrong! Please help! Thank you Edward Tag: filter in DataTable.Select Tag: 123077
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 - printersettings.installedprinters in asp.net not working for non-domain webserver with network printers on domain Hi, We have a .net web application, and are trying to use PrinterSettings.InstalledPrinters to list the printers installed on the webserver. (Windows 2003 server R2, IIS 6, .net framework 2.0.) The printers installed on the web server under the account used by asp.net for this web application are network printers that are shared by other computers that are on our domain. Permission has been granted for everyone to print to them. The web server running asp.net is not part of the domain, and the account used by asp.net is a non-domain account. (It's the identity of the application pool WEBSERVER\webappaccount). From asp.net we can use PrintDocument.PrinterSettings.PrinterName to set the printer name and then PrintDocument.Print works fine to these network printers, however, when you use PrinterSettings.InstalledPrinters it returns an empty collection, with no exception raised. What could be preventing PrinterSettings.InstalledPrinters from being populated, given that we can actually print from asp.net? any help much appreciated regards, Tessa Tag: filter in DataTable.Select Tag: 123072
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 - Datagrid inside a Panel doesn't load records hi all, I'm using .NET Framework 2.0 and I've created a Panel with a DataGrid inside. This datagrid was created automatically by dragging & dropping into it a datasource. The problem is that if I put this panel into a Form I can't load any data from my db. If I drag & drop into this same Form the same datasource of the panel all datas are loaded correctly. why ? Thax at all Tag: filter in DataTable.Select Tag: 123063
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 - How to maintain Webservices active on window 2003 server Hi, I wrote web services on .NET 2.0 running on windows 2003 server. When I start an application using those web services, It's take a long time to activate them. If I make another call just after It's faster. But after a long time, when I start the same application again it's take a long time. I suppose that the web services have been desactivated by the system. How can I maintain them activated. Thank's for your help Tag: filter in DataTable.Select Tag: 123059
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 - Difference of AppDomain.CurrentDomain.BaseDirectory and Environment.CurrentDirectory Hi, all What is the difference of the follows ? 1. AppDomain.CurrentDomain.BaseDirectory 2. Environment.CurrentDirectory 3. AppDomainSetup.ApplicationBase When I do Assembly.Load(...) Which is used ? thanks Tag: filter in DataTable.Select Tag: 123050
 - 22
 - Creating a dialog in managed c++ DLL Hi, I have a managed c++ DLL, and I want to add a dialog box to it. How do I do it ? I tried to design a dialog box in the resources, and use the MFC wizard to attach a class to it but I got some link errors: "unresoulved external symbol ___wargv" Should I use the MFC wizard ? If not, how do I attach the class to the resources ? Can someone please help ? thanks, Yoav. Tag: filter in DataTable.Select Tag: 123048
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 - How-To: Custom Desktop A friend of mine has little kid. Big enough to use the computer. He created a kid user with restricted user account for his kid but he would like to remove the confusing start menu, etc.... with a simple, home made, kiosk style, fullscreen GUI interface. Which could just launch a bunch of game and logout/shutdown. And he ask how to do that. But I don't know! It's why.. ahum.. I'm asking you, how to (or what's the best way to) write a "kiosk style, fullscreen GUI" which lauch at the start of the session and prevent the WINDOWS, WINDOWS+E, WINDOWS+M and ALT+TAB keys to work, or that sort of things... Any tip or link? Tag: filter in DataTable.Select Tag: 123043
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 - #region in VC.NET ? Hi, When i developed a VB.NET application i used a very useful directive : #Region and #End Region. What is the equivalent under VC.NET ? thanks a lot, Alain Tag: filter in DataTable.Select Tag: 123041
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 - HWND of my window Hi, How under VC.NET can i get the handle of my window ? thanks a lot, Al. Tag: filter in DataTable.Select Tag: 123029

How do I specify the filter for a column with NULL value in
DataTable.Select(filter, sort) function?

string filter = "columnname=NULL"; ?

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Re: filter in DataTable.Select by Kevin

Kevin
Wed Oct 18 14:49:49 CDT 2006

IsNull(columnname, replacementValue)

See
http://msdn2.microsoft.com/en-us/library/system.data.datacolumn.expression.aspx
--
HTH,

Kevin Spencer
Microsoft MVP
Chicken Salad Shooter
http://unclechutney.blogspot.com

A man, a plan, a canal, a palindrome that has.. oh, never mind.

"Roy" <Roy@discussions.microsoft.com> wrote in message
news:C2B1F5DE-6F86-4957-B65F-D00A1A437311@microsoft.com...
> How do I specify the filter for a column with NULL value in
> DataTable.Select(filter, sort) function?
>
> string filter = "columnname=NULL"; ?

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