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  • Can't instantiate COM component in C# - error 80070002

    - by Judah Himango
    I'm attempting to instantiate a Windows Media Player COM object on my machine: Guid mediaPlayerClassId = new Guid("47ac3c2f-7033-4d47-ae81-9c94e566c4cc"); Type mediaPlayerType = Type.GetTypeFromCLSID(mediaPlayerClassId); Activator.CreateInstance(mediaPlayerType); // <-- this line throws When executing that last line, I get the following error: System.IO.FileNotFoundException was caught Message="Retrieving the COM class factory for component with CLSID {47AC3C2F-7033-4D47-AE81-9C94E566C4CC} failed due to the following error: 80070002." Source="mscorlib" StackTrace: at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck) at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache) at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at System.Activator.CreateInstance(Type type) at MyStuff.PreviewFile(String filePath) in F:\Trunk\PreviewHandlerHosting\PreviewHandlerHost.cs:line 60 InnerException: This same code works on other developer machines and end user machines. For some reason, it only fails on my machine. What could be the cause?

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  • Stored Procedure call with parameters in ASP.NET MVC

    - by cc0
    I have a working controller for another stored procedure in the database, but I am trying to test another. When I request the URL; http://host.com/Map?minLat=0&maxLat=50&minLng=0&maxLng=50 I get the following error message, which is understandable but I can't seem to find out why it occurs; Procedure or function 'esp_GetPlacesWithinGeoSpan' expects parameter '@MinLat', which was not supplied. This is the code I am using. using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax; using System.Data; using System.Text; using System.Data.SqlClient; namespace prototype.Controllers { public class MapController : Controller { //Initial variable definitions //Array with chars to be used with the Trim() methods char[] lastComma = { ',' }; //Minimum and maximum lat/longs for queries float _minLat; float _maxLat; float _minLng; float _maxLng; //Creates stringbuilder object to store SQL results StringBuilder json = new StringBuilder(); //Defines which SQL-server to connect to, which database, and which user SqlConnection con = new SqlConnection(...connection string here...); // // HTTP-GET: /Map/ public string CallProcedure_getPlaces(float minLat, float maxLat, float minLng, float maxLng) { con.Open(); using (SqlCommand cmd = new SqlCommand("esp_GetPlacesWithinGeoSpan", con)) { cmd.CommandType = CommandType.Text; cmd.Parameters.AddWithValue("@MinLat", _minLat); cmd.Parameters.AddWithValue("@MaxLat", _maxLat); cmd.Parameters.AddWithValue("@MinLng", _minLng); cmd.Parameters.AddWithValue("@MaxLng", _maxLng); using (SqlDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { json.AppendFormat("\"{0}\":{{\"c\":{1},\"f\":{2}}},", reader["PlaceID"], reader["PlaceName"], reader["SquareID"]); } } con.Close(); } return "{" + json.ToString().TrimEnd(lastComma) + "}"; } //http://host.com/Map?minLat=0&maxLat=50&minLng=0&maxLng=50 public ActionResult Index(float minLat, float maxLat, float minLng, float maxLng) { _minLat = minLat; _maxLat = maxLat; _minLng = minLng; _maxLng = maxLng; return Content(CallProcedure_getPlaces(_minLat, _maxLat, _minLng, _maxLng)); } } } Any help on resolving this problem would be greatly appreciated.

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  • Element is already the child of another element.

    - by Erica
    I get the folowing error in my Silverlight application. But i cant figure out what control it is that is the problem. If i debug it don't break on anything in the code, it just fails in this framework callstack with only framework code. Is there any way to get more information on what part of a Silverlight app that is the problem in this case. Message: Sys.InvalidOperationException: ManagedRuntimeError error #4004 in control 'Xaml1': System.InvalidOperationException: Element is already the child of another element. at MS.Internal.XcpImports.CheckHResult(UInt32 hr) at MS.Internal.XcpImports.Collection_AddValue[T](PresentationFrameworkCollection1 collection, CValue value) at MS.Internal.XcpImports.Collection_AddDependencyObject[T](PresentationFrameworkCollection1 collection, DependencyObject value) at System.Windows.PresentationFrameworkCollection1.AddDependencyObject(DependencyObject value) at System.Windows.Controls.UIElementCollection.AddInternal(UIElement value) at System.Windows.PresentationFrameworkCollection1.Add(T value) at System.Windows.Controls.AutoCompleteBox.OnApplyTemplate() at System.Windows.FrameworkElement.OnApplyTemplate(IntPtr nativeTarget)

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  • Getting Rails Application Running Under IronRuby Rack

    - by NotMyself
    Anyone else playing with ironruby? I have successfully got the IronRuby.Rails.Example project running on my local machine under IIS 5.1. I am now attempting to get my own demo rails site running in the same way. My web.config is slightly different from the example project. I am attempting to only use what was distributed with IronRuby 1.0 and what I have installed using gems. I am getting the following error which doesn't give me a lot to go on: D:/demo/config/boot.rb:66:in `exit': exit (SystemExit) After trying many different things, I think it is having a problem finding gems. I have attached my web config and ironrack.log. Does anyone have pointers on what I am doing wrong? Thanks! <?xml version="1.0"?> <configuration> <configSections> <!-- custom configuration section for DLR hosting --> <section name="microsoft.scripting" type="Microsoft.Scripting.Hosting.Configuration.Section, Microsoft.Scripting" requirePermission="false"/> </configSections> <system.webServer> <handlers> <!-- clear all other handlers first. Don't do this if you have other handlers you want to run --> <clear/> <!-- This hooks up the HttpHandler which will dispatch all requests to Rack --> <add name="IronRuby" path="*" verb="*" type="IronRuby.Rack.HttpHandlerFactory, IronRuby.Rack" resourceType="Unspecified" requireAccess="Read" preCondition="integratedMode"/> </handlers> </system.webServer> <system.web> <!-- make this true if you want to debug any of the DLR code, IronRuby.Rack, or your own managed code --> <compilation debug="true"/> <httpHandlers> <!-- clear all other handlers first. Don't do this if you have other handlers you want to run --> <clear/> <!-- This hooks up the HttpHandler which will dispatch all requests to Rack --> <add path="*" verb="*" type="IronRuby.Rack.HttpHandlerFactory, IronRuby.Rack" /> </httpHandlers> </system.web> <!-- DLR configuration. Set debugMode to "true" if you want to debug your dynamic language code with VS --> <microsoft.scripting debugMode="false"> <options> <!-- Library paths: make sure these paths are correct --> <!--<set option="LibraryPaths" value="..\..\..\Languages\Ruby\libs\; ..\..\..\..\External.LCA_RESTRICTED\Languages\Ruby\ruby-1.8.6p368\lib\ruby\site_ruby\1.8\; ..\..\..\..\External.LCA_RESTRICTED\Languages\Ruby\ruby-1.8.6p368\lib\ruby\1.8\"/>--> <set option="LibraryPaths" value="C:\IronRuby\lib\IronRuby;C:\IronRuby\lib\ruby\1.8;C:\IronRuby\lib\ruby\site_ruby;C:\IronRuby\lib\ruby\site_ruby\1.8"/> </options> </microsoft.scripting> <appSettings> <add key="AppRoot" value="."/> <add key="Log" value="ironrack.log"/> <!-- <add key="GemPath" value="..\..\..\..\External.LCA_RESTRICTED\Languages\Ruby\ruby-1.8.6p368\lib\ruby\gems\1.8"/> --> <add key="GemPath" value="C:\IronRuby\Lib\ironruby\gems\1.8\gems"/> <add key="RackEnv" value="production"/> </appSettings> </configuration> === Booting ironruby-rack at 4/15/2010 1:27:12 PM [DEBUG] >>> TOPLEVEL_BINDING = binding => Setting GEM_PATH: 'C:\\IronRuby\\Lib\\ironruby\\gems\\1.8\\gems' => Setting RACK_ENV: 'production' => Loading RubyGems [DEBUG] >>> require 'rubygems' => Loading Rack >=1.0.0 [DEBUG] >>> gem 'rack', '>=1.0.0';require 'rack' => Loaded rack-1.1 => Application root: 'D:\\demo' => Loading Rack application [DEBUG] >>> Rack::Builder.new { ( require "config/environment" ENV['RAILS_ENV'] = 'development' use Rails::Rack::LogTailer use Rails::Rack::Static run ActionController::Dispatcher.new ) }.to_app exit D:/demo/config/boot.rb:66:in `exit': exit (SystemExit) from D:/demo/config/boot.rb:66:in `load_rails_gem' from D:/demo/config/boot.rb:54:in `load_initializer' from D:/demo/config/boot.rb:38:in `run' from D:/demo/config/boot.rb:11:in `boot!' from D:/demo/config/boot.rb:110 from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from D:/demo/config/environment.rb:7 from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from (eval):1 from C:/IronRuby/lib/ironruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval' from C:/IronRuby/lib/ironruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize' from (eval):0 from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\RubyEngine.cs:52:in `Execute' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\RubyEngine.cs:45:in `Execute' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\Application.cs:68:in `Rackup' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\Application.cs:32:in `.ctor' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\HttpHandlerFactory.cs:37:in `GetHandler' from System.Web:0:in `MapHttpHandler' from System.Web:0:in `System.Web.HttpApplication.IExecutionStep.Execute' from System.Web:0:in `ExecuteStep' from System.Web:0:in `ResumeSteps' from System.Web:0:in `System.Web.IHttpAsyncHandler.BeginProcessRequest' from System.Web:0:in `ProcessRequestInternal' from System.Web:0:in `ProcessRequestNoDemand' from System.Web:0:in `ProcessRequest'

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  • cannot convert from 'cli::array<Type> ^' to 'cli::array<Type> ^[]'

    - by user1576628
    I'm pretty new to C++/CLI and I am trying to convert a System::String to a System::Char array. Here's what I have so far: private: System::Void modeToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) { Mode frmMode; if(frmMode.ShowDialog() == System::Windows::Forms::DialogResult::OK){ array <Char>^ load [] = gcnew array<Char>(txtbxName->Text->ToCharArray()); } } txtbxName is a textbox inside a the form. Supposedly, this should work, but I get the compiler error: error C2440: cannot convert from 'cli::array<Type> ^' to 'cli::array<Type> ^[]' for the fourth line of the snippet.

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  • FileInfo..ctor(string fileName) throwing exception: bug in SL 4.0 or .NET 4.0?

    - by Duncan Bayne
    The following test case passes in .NET 4.0: var fiT = new FileInfo("myhappyfilename"); Assert.IsNotNull(fiT); ... but fails in Silverlight 4.0 with the following error: System.ArgumentNullException: Value cannot be null. Parameter name: format at System.String.Format(IFormatProvider provider, String format, Object[] args) at System.Environment.GetResourceString(String key, Object[] values) at System.IO.FileSecurityState.EnsureState() at System.IO.FileInfo.Init(String fileName, Boolean checkHost) at System.IO.FileInfo..ctor(String fileName) Either the failure is a bug in SL 4.0, or the non-failure is a bug in .NET 4.0. Anyone know which it is? (For the record, I'm running SL 4.0 on VS 2010 RC, which may be contributing to the problem).

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  • SMTP error: "Client does not have permission to submit mail to this server"

    - by Raj Kumar
    I'm getting the following error while sending email. What could be the cause? Client does not have permission to submit mail to this server. The server response was: 5.5.1 STARTTLS may not be repeated. Here's the stack trace... Stack Trace at System.Net.Mail.StartTlsCommand.CheckResponse(SmtpStatusCode statusCode, String response) at System.Net.Mail.StartTlsCommand.Send(SmtpConnection conn) at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message) I'm connecting to smtp.gmail.com with SSL on port 587 / 465

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  • IIS7 + WCF + Silverlight problems

    - by Eanna
    Hey, I've been building a silverlight application and a WCF service for a while now and recently tried to host them in IIS7. I installed IIS7 on Windows Server 2008 R2 and added these two application to my default website. I am having a number of problems so im hoping one of you can help out... 1) The silverlight and WCF service applications do not work with pass-through authentication. I need to "connect as" the administrator server account when setting up the application. I read online that you should only need to use the "connect as" field when you are connecting to another computer. If i dont supply the admin credentials i get this error. Do i have to set up permissions somewhere else? HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid. Detailed Error Information Module IIS Web Core Notification BeginRequest Handler Not yet determined Error Code 0x80070005 Config Error Cannot read configuration file due to insufficient permissions Config File \?\C:\Users\Administrator\Documents\My Dropbox\Research Masters\Project\WCFService\Website\web.config Requested URL http:://localhost:80/WCFService/Service.svc Physical Path C:\Users\Administrator\Documents\My Dropbox\Research Masters\Project\WCFService\Website\Service.svc Logon Method Not yet determined Logon User Not yet determined Config Source -1: 0: Links and More Information This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error. 2) Visual studio generated 2 webpages to run my silverlight application (.html and .aspx). When I am running the silverlight application (connected as admin) I can navigate to the .html page, no problem. When I try to open the .aspx file i get the following error Server Error in '/Platform' Application. Access is denied. Description: An error occurred while accessing the resources required to serve this request. You might not have permission to view the requested resources. Error message 401.3: You do not have permission to view this directory or page using the credentials you supplied (access denied due to Access Control Lists). Ask the Web server's administrator to give you access to 'C:\Users\Administrator\Documents\My Dropbox\Research Masters\Project\Platform\Website\PlatformTestPage.aspx'. Version Information: Microsoft .NET Framework Version:4.0.30128; ASP.NET Version:4.0.30128.1 3) The WCF service runs fine (again, connected as admin) until i restart the server. When i try to run the WCF service after a reboot, the mysql assembly seems to be missing from the solution. If i just rebuilt the solution and run the service again... it works (until next restart). Whats causing this error? Solution here - http://tinypic.com/view.php?pic=5yasqx&s=5 Server Error in '/WCFService' Application. Could not load file or assembly 'MySql.Data, Version=6.2.2.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. Access is denied. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.IO.FileLoadException: Could not load file or assembly 'MySql.Data, Version=6.2.2.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. Access is denied. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Assembly Load Trace: The following information can be helpful to determine why the assembly 'MySql.Data, Version=6.2.2.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' could not be loaded. WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. Stack Trace: [FileLoadException: Could not load file or assembly 'MySql.Data, Version=6.2.2.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. Access is denied.] System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0 System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +567 System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +192 System.Reflection.Assembly.Load(String assemblyString) +35 System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses) +243 System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath) +1423 System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +50 System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +1132 [ServiceActivationException: The service '/WCFService/Service.svc' cannot be activated due to an exception during compilation. The exception message is: Could not load file or assembly 'MySql.Data, Version=6.2.2.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. Access is denied..] System.Runtime.AsyncResult.End(IAsyncResult result) +889824 System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +179150 System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +107 Version Information: Microsoft .NET Framework Version:4.0.30128; ASP.NET Version:4.0.30128.1 Thats about it, hope someone reads this message, I wasted most of the weekend trying to fix these problems on my own... thanks

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  • How to set permissions on MSMQ Cluster queues?

    - by JorgeSandoval
    I've got a cluster with functioning private MSMQ 3.0 queues. I'm trying to programmatically set the permissions, but can't seem to connect via System.Messaging on the queues. The code below works just fine when working with local queues (and using .\ nomenclature for the local queue). How to programmatically set the permissions on the clustered queues? Powershell code executed from the active node function set-msmqpermission ([string] $queuepath,[string] $account, [string] $accessright) { if (!([System.Messaging.MessageQueue]::Exists($queuepath))){ throw "$queuepath could not be found." } $q=New-Object System.Messaging.MessageQueue($queuepath) $q.SetPermissions($account,[System.Messaging.MessageQueueAccessRights]::$accessright, [System.Messaging.AccessControlEntryType]::Set) } set-msmqpermission "clusternetworkname\private$\qa1ack" "UserAccount" "FullControl" Exception calling "SetPermissions" with "3" argument(s): "Invalid queue path name." At line:30 char:19 + $q.SetPermissions <<<< ($account,[System.Messaging.MessageQueueAccessRights]::$accessright, + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : DotNetMethodException

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  • Problem sending mail with simple .net application. Server refusal error.

    - by Fatih
    I have a very simple .net application for testing SMTP on .net. But i am receiving this weird error. "System.Net.Mail.SmtpException: Failure sending mail. --- System.Net.WebException: Unable to connect to the remote server --- System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it" SMTP server is remote and doesn't need any kind of authentication so i don't need credentials. But i can send mails from this computer with outlook using same smtp server and same smtp settings without any problem. Any ideas? It will be appreciated so much. Imports System.Net.Mail Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim smtp As New SmtpClient smtp.Host = "10.241.128.220" smtp.Port = 25 smtp.Send("[email protected]", "[email protected]", "test", "test") End Sub

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  • BindException with INTERNET permission requested

    - by Mondain
    I have seen several questions regarding SocketException when using Android, but none of them cover the BindException that I get even with the INTERNET permission specified in my manifest. Here is part of my manifest: <uses-permission android:name="android.permission.INTERNET"></uses-permission> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> <uses-permission android:name="android.permission.READ_OWNER_DATA"></uses-permission> <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission> <uses-permission android:name="android.permission.ACCOUNT_MANAGER"></uses-permission> <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"></uses-permission> Here is the relevant portion of my LogCat output: 04-22 14:49:06.117: DEBUG/MyLibrary(4844): Address to bind: 192.168.1.14 port: 843 04-22 14:49:06.197: WARN/System.err(4844): java.net.BindException: Permission denied (maybe missing INTERNET permission) 04-22 14:49:06.207: WARN/System.err(4844): at org.apache.harmony.luni.platform.OSNetworkSystem.socketBindImpl(Native Method) 04-22 14:49:06.207: WARN/System.err(4844): at org.apache.harmony.luni.platform.OSNetworkSystem.bind(OSNetworkSystem.java:107) 04-22 14:49:06.217: WARN/System.err(4844): at org.apache.harmony.luni.net.PlainSocketImpl.bind(PlainSocketImpl.java:184) 04-22 14:49:06.217: WARN/System.err(4844): at java.net.ServerSocket.bind(ServerSocket.java:414) 04-22 14:49:06.227: WARN/System.err(4844): at org.apache.harmony.nio.internal.ServerSocketChannelImpl$ServerSocketAdapter.bind(ServerSocketChannelImpl.java:213) 04-22 14:49:06.227: WARN/System.err(4844): at java.net.ServerSocket.bind(ServerSocket.java:367) 04-22 14:49:06.237: WARN/System.err(4844): at org.apache.harmony.nio.internal.ServerSocketChannelImpl$ServerSocketAdapter.bind(ServerSocketChannelImpl.java:283) 04-22 14:49:06.237: WARN/System.err(4844): at mylibrary.net.PolicyConnection$PolicyServerWorker.(PolicyConnection.java:201) I Really hope this is a simple problem and not something complicated by the fact that the binding is occurring within a worker thread on a port less than 1024. Update Looks as if this is a privileged port issue, anyone know how to bind to ports lower than 1024 in Android? SelectorProvider provider = SelectorProvider.provider(); try { ServerSocketChannel channel = provider.openServerSocketChannel(); policySocket = channel.socket(); Log.d("MyLibrary", "Address to bind: " + device.getAddress().getAddress() + " port: 843"); InetSocketAddress addr = new InetSocketAddress(InetAddress.getByName(device.getAddress().getAddress()), 843); policySocket.bind(addr); policySocket.setReuseAddress(true); policySocket.setReceiveBufferSize(256); } catch (Exception e) { e.printStackTrace(); }

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  • Tearing my hair out - ASP.Net AJAX AutoComplete not working

    - by Dave
    Hope someone can help with this. I've been up and down the web and through this site looking for an answer, but still can't get the Autocomplete AJAX control to work. I've gone from trying to include it in an existing site to stripping it right back to a very basic form and it's still not functioning. I'm having a little more luck using Page Methods rather than a local webservice, so here is my code <%@ Page Language="C#" AutoEventWireup="true" CodeFile="droptest.aspx.cs" Inherits="droptest" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server"> </asp:ScriptManager> <cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" MinimumPrefixLength="1" ServiceMethod="getResults" TargetControlID="TextBox1"> </cc1:AutoCompleteExtender> </form> </body> </html> using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.Script.Services; using System.Web.Services; public partial class droptest : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } [WebMethod] public string[] getResults(string prefixText, int count) { string[] test = new string[5] { "One", "Two", "Three", "Four", "Five" }; return test; } } Tried to keep things as simple as possible, but all I get is either the autocomplete dropdown with the source of the page (starting with the <! doctype...) letter by letter, or in IE7 it just says "UNDEFINED" all the way down the list. I'm using Visual Web Developer 2008 at the moment, this is running on Localhost. I think I've exhausted all the "Try this..." options I can find, everything from adding in [ScriptMethod] to changing things in Web.Config. Is there anything obviously wrong with this code? Only other thing that may be having an effect is in Global.asax I do a Context.RewritePath to rewrite URLs - does this have any effect on AJAX? Thanks for any help you can give.

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  • ASP .NET 2.0 cannot open SQLConnection

    - by user162117
    Using: IIS 6; Anonymous Authentication (with a user that belongs to the administrators group); SQL Server 2005; .NET 2.0 Web.config: <system.web> <securityPolicy> <trustLevel name="Full" policyFile="internal" /> </securityPolicy> </system.web> <identity impersonate="true"/> I have this exception when I try to Open a SQLConnection: Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. What could it be?

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  • How to reference both ASSEMBLYVERSION and ASSEMBLYFILEVERSION?

    - by Chuck
    I need to display both the AssemblyVersion and the AssemblyFileVersion. In AssemblyInfo.cs, I have: [assembly: AssemblyVersion("1.0.*")] [assembly: AssemblyFileVersion("2009.8.0")] However, I only get "2009.8.0" when I reference the above with: public class VersionInfo { public static string AppVersion() { return System.Diagnostics.FileVersionInfo.GetVersionInfo(System.Reflection.Assembly.GetExecutingAssembly().Location).FileMajorPart + "." + System.Diagnostics.FileVersionInfo.GetVersionInfo(System.Reflection.Assembly.GetExecutingAssembly().Location).FileMinorPart + "." + System.Diagnostics.FileVersionInfo.GetVersionInfo(System.Reflection.Assembly.GetExecutingAssembly().Location).FileBuildPart; } } How can I display both values? Thanks.

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  • Why does this thumbnail generation code throw OutOfMemoryException on large files?

    - by tsilb
    This code works great for generating thumbnails, but when given a very large (100MB+) TIFF file, it throws OutOfMemoryExceptions. When I do it manually in Paint.NET on the same machine, it works fine. How can I improve this code to stop throwing on very large files? In this case I'm loading a 721MB TIF on a machine with 8GB RAM. The Task Manager shows 2GB used so something is preventing it from using all that memory. Specifically it throws when I load the Image to calculate the size of the original. What gives? /// <summary>Creates a thumbnail of a given image.</summary> /// <param name="inFile">Fully qualified path to file to create a thumbnail of</param> /// <param name="outFile">Fully qualified path to created thumbnail</param> /// <param name="x">Width of thumbnail</param> /// <returns>flag; result = is success</returns> public static bool CreateThumbnail(string inFile, string outFile, int x) { // Validation - assume 16x16 icon is smallest useful size. Smaller than that is just not going to do us any good anyway. I consider that an "Exceptional" case. if (string.IsNullOrEmpty(inFile)) throw new ArgumentNullException("inFile"); if (string.IsNullOrEmpty(outFile)) throw new ArgumentNullException("outFile"); if (x < 16) throw new ArgumentOutOfRangeException("x"); if (!File.Exists(inFile)) throw new ArgumentOutOfRangeException("inFile", "File does not exist: " + inFile); // Mathematically determine Y dimension int y; using (Image img = Image.FromFile(inFile)) { // OutOfMemoryException double xyRatio = (double)x / (double)img.Width; y = (int)((double)img.Height * xyRatio); } // All this crap could have easily been Image.Save(filename, x, y)... but nooooo.... using (Bitmap bmp = new Bitmap(inFile)) using (Bitmap thumb = new Bitmap((Image)bmp, new Size(x, y))) using (Graphics g = Graphics.FromImage(thumb)) { g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality; System.Drawing.Imaging.ImageCodecInfo codec = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders()[1]; System.Drawing.Imaging.EncoderParameters ep2 = new System.Drawing.Imaging.EncoderParameters(1); ep2.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L); g.DrawImage(bmp, new Rectangle(0,0,thumb.Width, thumb.Height)); try { thumb.Save(outFile, codec, ep2); return true; } catch { return false; } } }

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  • How do I pass W3 validation for Google checkout url?

    - by Dinesh
    When I do validate the page in W3 validation, I got few errors with below code, <input type="image" name="Google Checkout" alt="Fast checkout through Google" src="https://sandbox.google.com/checkout/buttons/checkout.gif?merchant_id=xxxxxxxxx&w=168&h=44&style=white&variant=text&loc=en_US" / Errors are as follows, 1.cannot generate system identifier for general entity "w" 2.reference to entity "w" for which no system identifier could be generated 3.general entity "h" not defined and no default entity 4.reference to entity "h" for which no system identifier could be generated 5.general entity "style" not defined and no default entity 6.reference to entity "style" for which no system identifier could be generated 7.general entity "variant" not defined and no default entity 8.reference to entity "variant" for which no system identifier could be generated 9.general entity "loc" not defined and no default entity 10.reference to entity "loc" for which no system identifier could be generated This is the only errors comes from the URL; is there way to pass W3 validation for this URL.

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  • ASP Web Service Not Working

    - by BlitzPackage
    Good people, Hello. Our webservice is not working. We should be receiving information via an HTTP POST. However, nothing is working. Below are the code files. Let me know what you think. Thanks in advance for any help or information you can provide. (By the way, some information (e.g. class names, connection strings, etc...) has been removed or changed in order to hide any sensitive information. Imports System.Web.Mail Imports System.Data Imports System.Data.SqlClient Imports System.IO Partial Class hbcertification Inherits System.Web.UI.Page Public strBody As String = "" Public sqlInsertStr As String = "" Public errStr As String = "" Public txn_id, first_name, last_name, address_street, address_city, address_state, address_zip, address_country, address_phone, payer_email, Price, key, invoice, payment_date, mc_fee, buyer_ip As String Dim myConn As New SqlConnection(ConfigurationSettings.AppSettings("ConnectionInfo")) '******************************************************************************************* Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load strBody += "Test email sent.Customer name: " & Request("first_name") & " " & Request("last_name") strBody += "Reg Key: " & Request("key") & "Transaction ID: " & Request("txn_id") & "Tran Type: " & Request("txn_type") updateFile(Server.MapPath("log.txt"), strBody) txn_id = Request("txn_id") first_name = Request("first_name") last_name = Request("last_name") address_street = Request("address_street") address_city = Request("address_city") address_state = Request("address_state") address_zip = Request("address_zip") address_country = Request("address_country") address_phone = Request("address_phone") payer_email = Request("payer_email") Price = Request("Price") key = Request("key") invoice = Request("invoice") payment_date = Request("payment_date") mc_fee = Request("mc_fee") buyer_ip = Request("buyer_ip") If Request("first_name") "" And Request("last_name") "" Then SendMail("[email protected]", "[email protected]", strBody, "Software Order Notification", "[email protected]") Else Response.Write("Email not sent. Name missing.") End If Dim sItem As String Response.Write("") If Request.Form("dosubmit") = "1" Then Response.Write("FORM VALS:") For Each sItem In Request.Form Response.Write("" & sItem & " - [" & Request.Form(sItem) & "]") Next sqlInsertStr += "insert into aspnet_MorrisCustomerInfo (TransactionID,FirstName,LastName,AddressStreet,AddressCity,AddressState,AddressZip,AddressCountry,AddressPhone,PayerEmail,Price,AuthenticationCode,InvoiceID,PurchaseDate,PaypalFee,PurchaseIPAddress) values ('" & SQLSafe(txn_id) & "','" & SQLSafe(first_name) & "','" & SQLSafe(last_name) & "','" & SQLSafe(address_street) & "','" & SQLSafe(address_city) & "','" & SQLSafe(address_state) & "','" & SQLSafe(address_zip) & "','" & SQLSafe(address_country) & "','" & SQLSafe(address_phone) & "','" & SQLSafe(payer_email) & "','" & SQLSafe(Price) & "','" & SQLSafe(key) & "','" & SQLSafe(invoice) & "','" & SQLSafe(payment_date) & "','" & SQLSafe(mc_fee) & "','" & SQLSafe(buyer_ip) & "')" runMyQuery(sqlInsertStr, False) End If Response.Write("sqlInsertStr is: " & sqlInsertStr) Response.Write("") End Sub '******************************************************************************************* Sub SendMail(ByVal strEmailAddress, ByVal strEmailAddress_cc, ByVal Email_Body, ByVal Email_Subject, ByVal Email_From) If Request.ServerVariables("server_name") "localhost" Then Try Dim resumeEmail As New MailMessage resumeEmail.To = strEmailAddress resumeEmail.Cc = strEmailAddress_cc resumeEmail.From = Email_From resumeEmail.Subject = Email_Subject resumeEmail.Priority = MailPriority.High 'resumeEmail.BodyFormat = MailFormat.Html resumeEmail.BodyFormat = MailFormat.Html resumeEmail.Body = Email_Body 'System.Web.Mail.SmtpMail.SmtpServer = "morris.com" System.Web.Mail.SmtpMail.SmtpServer = "relay-hosting.secureserver.net" System.Web.Mail.SmtpMail.Send(resumeEmail) Response.Write("Email sent.") Catch exc As Exception Response.Write("MAIL ERROR OCCURRED" & exc.ToString() & "From: " & Email_From) End Try Else Response.Write("TEST RESPONSE" & strBody & "") End If End Sub End Function End Class Process Data Asp.Net Configuration option in Visual Studio. A full list of settings and comments can be found in machine.config.comments usually located in \Windows\Microsoft.Net\Framework\v2.x\Config -- section enables configuration of the security authentication mode used by ASP.NET to identify an incoming user. -- section enables configuration of what to do if/when an unhandled error occurs during the execution of a request. Specifically, it enables developers to configure html error pages to be displayed in place of a error stack trace. --

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  • Text to Speech in ASP.NET - Access is denied... what to do?

    - by Magnetic_dud
    On my personal website, i would like to make it "pronounce" something I solved the "concept" problem, as in here, and on my desktop it works smoothly when launched from visual web developer. Creates a file, and then an embedded player in the page will play it. Perfect. So, I uploaded it on the server... I get this error 500: Server Error in '/sapi' Application. Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via , the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user. (...) Source Error: See it below Source File: c:\mypath\sapi\myfile.aspx.cs Line: 21 Stack Trace: [UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))] SpeechLib.SpVoiceClass.Speak(String Text, SpeechVoiceSpeakFlags Flags) +0 prova.Button1_Click(Object sender, EventArgs e) in c:\mypath\sapi\prova.aspx.cs:21 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565 Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053 This is the source Source Error: Line 19: myfile.Open(@"C:\mypath\sapi\gen\hi.wav",SpeechStreamFileMode.SSFMCreateForWrite,false); Line 20: voice.AudioOutputStream = myfile; Line 21: voice.Speak("Hi",SpeechVoiceSpeakFlags.SVSFDefault); I get error on line 21, Voice.speak That probably means that the aspnet worker user has not some right permission The generation folder has all the right permissions: an empty file is created. So, i have to give permission of execute to some system dll? Do you know which dll? It is not bin\Interop.SpeechLib.dll, on this one the aspnet user has full control Ps: i have full control on the (windows) server (i mean, access by RDC, is not a shared hosting)

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  • How to use ResourceManager in a "website" mode ?

    - by Erick
    I am trying here to do a manual translation for the application I am working with. (There is already a working LocalizationModule but it's working dodgy, so I can't use <asp:Localize /> tags. Normally with ResourceManager you are supposed to be using it as Namespace.Folder.Resourcename (in an application). Currently I am translating an existing asp.net "website" (not web application so no namespace here....). The resources are located into a folder name "Locales/resources" which contains "fr-ca.resx" and "en-us.resx". So I used a code with something like this : public static string T(string search) { System.Resources.ResourceManager resMan = new System.Resources.ResourceManager( "Locales", System.Reflection.Assembly.GetExecutingAssembly(), null ); var text = resMan.GetString(search, System.Threading.Thread.CurrentThread.CurrentCulture); if (text == null) return "null"; else if (text == string.Empty) return "empty"; else return text; } and inside the page I have something like this <%= Locale.T("T_HOME") %> When I refresh I have this : Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Locales.resources" was correctly embedded or linked into assembly "App_Code.9yopn1f7" at compile time, or that all the satellite assemblies required are loadable and fully signed. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Resources.MissingManifestResourceException: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Locales.resources" was correctly embedded or linked into assembly "App_Code.9yopn1f7" at compile time, or that all the satellite assemblies required are loadable and fully signed. Source Error: Line 14: System.Resources.ResourceManager resMan = new System.Resources.ResourceManager( "Locales", System.Reflection.Assembly.GetExecutingAssembly(), null ); Line 15: Line 16: var text = resMan.GetString(search, System.Threading.Thread.CurrentThread.CurrentCulture); Line 17: Line 18: if (text == null) Source File: c:\inetpub\vhosts\galerieocarre.com\subdomains\dev\httpdocs\App_Code\Locale.cs Line: 16 I even tried to load the resource with Locales.fr-ca or only fr-ca nothing quite work here.

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  • C# Active Directory Group Querying

    - by user1073912
    I am trying the code found here. I am getting the following compile time error: The name 'p' does not exist in the current context Here is my code...can someone help? Thanks. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.DirectoryServices; using System.DirectoryServices.AccountManagement; public static List<string> GetGroups() { using (PrincipalContext ctx = new PrincipalContext(ContextType.Domain)) { using (p = Principal.FindByIdentity(ctx, "yourUserName")) { var groups = p.GetGroups(); using (groups) { foreach (Principal group in groups) { Console.WriteLine(group.SamAccountName + "-" + group.DisplayName); } } } } }

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  • Facebook publish HTTP Error 400 : bad request

    - by Abhishek
    Hey I am trying to publish a score to Facebook through python's urllib2 library. import urllib2,urllib url = "https://graph.facebook.com/USER_ID/scores" data = {} data['score']=SCORE data['access_token']='APP_ACCESS_TOKEN' data_encode = urllib.urlencode(data) request = urllib2.Request(url, data_encode) response = urllib2.urlopen(request) responseAsString = response.read() I am getting this error: response = urllib2.urlopen(request) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 124, in urlopen return _opener.open(url, data, timeout) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 389, in open response = meth(req, response) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 502, in http_response 'http', request, response, code, msg, hdrs) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 427, in error return self._call_chain(*args) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 361, in _call_chain result = func(*args) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 510, in http_error_default raise HTTPError(req.get_full_url(), code, msg, hdrs, fp) urllib2.HTTPError: HTTP Error 400: Bad Request Not sure if this is relating to Facebook's Open Graph or improper urllib2 API use.

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  • How do I load SciLexer.dll in Visual Studio 2008 Designer, on Windows 7 64-bit?

    - by Filini
    We develop a WinForm application using Scintilla.NET (1.7) component, which uses SciLexer.dll (unamnaged). At run-time, we distribute both 32bit and 64bit SciLexer.dll, and we load the correct one when the application starts (everything works fine). On our new development environments (Windows 7 64-bit), all our solutions build and run just fine, but the WinForm visual designer does not load our forms/controls which use Scintilla.NET, because it cannot load the correct SciLexer.dll: Window class name is not valid. at System.Windows.Forms.NativeWindow.WindowClass.RegisterClass() at System.Windows.Forms.NativeWindow.WindowClass.Create(String className, Int32 classStyle) at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp) at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Control.get_Handle() at Scintilla.ScintillaControl.SendMessageDirect(UInt32 msg, IntPtr wParam, IntPtr lParam) at Scintilla.ScintillaControl.SendMessageDirect(UInt32 msg) at Scintilla.ScintillaControl.get_CodePage() at Scintilla.ScintillaControl..ctor(String sciLexerDllName) at Scintilla.ScintillaControl..ctor() Where does Visual Studio 2008 look for unmanaged libraries? I tried putting the 64-bit SciLexer.dll in SysWOW64, in the folder where ScintillaNET.dll is referenced, adding a folder in PATH system variable, adding a folder reference in the project, but I keep getting this error. Any help is appreciated.

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  • How do I fix HttpRuntime.get_UsingIntegratedPipeline() method not found exception?

    - by Nick Berardi
    This is the exception that I am getting when I run my application with the Managed Fusion Url Rewriter installed. Exception Details: System.MissingMethodException: Method not found: 'Boolean System.Web.HttpRuntime.get_UsingIntegratedPipeline()'. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [MissingMethodException: Method not found: 'Boolean System.Web.HttpRuntime.get_UsingIntegratedPipeline()'.] ManagedFusion.Rewriter.RewriterModule.context_BeginRequest(Object sender, EventArgs e) in C:\Users\Nick\Documents\Projects\Managed Fusion (Open Source)\ManagedFusion.Rewriter\Source\RewriterModule.cs:162 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64 I have .NET 2.0 SP1 installed on my server that is throwing this error.

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  • Foundation framework. No NSString.h file

    - by pawelini1
    Hello I'm getting a few errors just after I updated my working copy via SVN. /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSCharacterSet.h:8:0 /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSCharacterSet.h:8:32: error: Foundation/NSString.h: No such file or directory /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSCharacterSet.h:45:0 /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSCharacterSet.h:45: error: expected ')' before 'unichar' /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSPathUtilities.h:10:0 /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSPathUtilities.h:10: error: cannot find interface declaration for 'NSString' All that errors tell that compiler is unable to find NSString.h file in Foundation framework and I have opened the Foundation framework in Xcode/Frameworks/Foundation.framework/Headers and noticed that there is no NSString header file there. Could anyone tell me what happened? I tried to delete the framework and add it again but it failed to. Still I don't have NSString header file.

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  • DatagridView loses current edit on Background update

    - by yoni.s
    Here's my problem : I have a DataGridView bound to a BindingList of custom objects. A background thread is constantly updating a value of these objects. The udpates are showing correctly, and everything is fine except for one thing - If you try to edit a different field while the background-updated field is being updated, it loses the entered value. Here is a code sample that demonstrates this behavior: (for new form, drop a new DataGridView on:) using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Threading; namespace WindowsFormsApplication2 { public partial class Form1 : Form { private BindingList<foo> flist; private Thread thrd; private BindingSource b; public Form1() { InitializeComponent(); flist = new BindingList<foo> { new foo(){a =1,b = 1, c=1}, new foo(){a =1,b = 1, c=1}, new foo(){a =1,b = 1, c=1}, new foo(){a =1,b = 1, c=1} }; b = new BindingSource(); b.DataSource = flist; dataGridView1.DataSource = b; thrd = new Thread(new ThreadStart(updPRoc)); thrd.Start(); } private void upd() { flist.ToList().ForEach(f=>f.c++); } private void updPRoc() { while (true) { this.BeginInvoke(new MethodInvoker(upd)); Thread.Sleep(1000); } } } public class foo:INotifyPropertyChanged { private int _c; public int a { get; set; } public int b { get; set; } public int c { get {return _c;} set { _c = value; if (PropertyChanged!= null) PropertyChanged(this,new PropertyChangedEventArgs("c")); } } #region INotifyPropertyChanged Members public event PropertyChangedEventHandler PropertyChanged; #endregion } } So, you edit column a or b, you will see that the column c update causes you to lose your entry. Any thoughts appreciated.

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