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Win32Exception (0x80004005): Class already exists http://forum.easyxls.com/viewtopic.php?f=4&t=323 |
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Author: | newtoncd [ Sun Apr 27, 2008 5:02 pm ] | |||||||||
Post subject: | Win32Exception (0x80004005): Class already exists | |||||||||
Hello, I'm evaluating the EasyXLS and sometimes the following error occurs: Line 75: Dim xls As New ExcelDocument Line 76: Dim xlsWorksheet As New ExcelWorksheet("CLIENTES") Line 77: xls.easy_addWorksheet(xlsWorksheet) Source File: C:\sites\NetStoreManager2007\web\IEclientes.aspx.vb Line: 76 Stack Trace: [Win32Exception (0x80004005): Class already exists] System.Windows.Forms.WindowClass.RegisterClass() +1091 System.Windows.Forms.WindowClass.Create(String className, Int32 classStyle) +181 System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp) +215 System.Windows.Forms.Control.CreateHandle() +213 System.Windows.Forms.Control.get_Handle() +60 System.Windows.Forms.Control.CreateHandle() +200 System.Windows.Forms.Control.get_Handle() +60 System.Windows.Forms.Control.CreateGraphicsInternal() +5 System.Windows.Forms.Control.CreateGraphics() +36 EasyXLS.Util.Conversion.b..cctor() +202 [TypeInitializationException: The type initializer for "EasyXLS.Util.Conversion.b" threw an exception.] EasyXLS.Util.Conversion.b.a(Int32 A_0, Int16[] A_1, String A_2, Boolean A_3) +20 EasyXLS.ExcelSheet.setSheetName(String sheetName) +602 EasyXLS.ExcelSheet..ctor() +136 EasyXLS.ExcelWorksheet..ctor(String sheetName) +46 IEclientes.exportarBtn_Click(Object sender, EventArgs e) in C:\sites\NetStoreManager2007\web\IEclientes.aspx.vb:76 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108 PeterBlum.VAM.Button.OnClick(EventArgs pE) +71 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33 System.Web.UI.Page.ProcessRequestMain() +1292 The vb source is:
What I am doing wrong? Regards, Newton |
Author: | daniela [ Tue May 06, 2008 3:16 am ] |
Post subject: | |
This is a .Net Framework defect. It is a recognized Microsoft bug and it occurs because a form may not be correctly disposed. It usually happens for a web application and only in the Visual Studio .NET development environment. Restarting IIS solves the problem. Please install the latest patch for .NET Framework. This may fix your problem. |
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