Excel应用程序在设置宽度时出现异常

我试图通过WPF项目控制Excel应用程序。Excel应用程序在设置宽度时出现异常

var xla = new Microsoft.Office.Interop.Excel.Application(); 

xla.Width = 400; // This line is throwing the below exception.

它很好地工作几次，几天后，同一行给出了一个例外如下所示。注销并登录到系统会暂时解决问题。

System.Runtime.InteropServices.COMException was unhandled 
    HResult=-2146827284 
    Message=Exception from HRESULT: 0x800A03EC 
    Source=Microsoft.Office.Interop.Excel 
    ErrorCode=-2146827284 
    StackTrace: 
     at Microsoft.Office.Interop.Excel.ApplicationClass.set_Width(Double RHS) 
     at EmbedExcel1.Form1.button1_Click(Object sender, EventArgs e) in d:\Test Projects\EmbedExcel1\EmbedExcel1\Form1.cs:line 27 
     at System.Windows.Forms.Control.OnClick(EventArgs e) 
     at System.Windows.Forms.Button.OnClick(EventArgs e) 
     at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) 
     at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) 
     at System.Windows.Forms.Control.WndProc(Message& m) 
     at System.Windows.Forms.ButtonBase.WndProc(Message& m) 
     at System.Windows.Forms.Button.WndProc(Message& m) 
     at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) 
     at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) 
     at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) 
     at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) 
     at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData) 
     at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) 
     at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) 
     at System.Windows.Forms.Application.Run(Form mainForm) 
     at EmbedExcel1.Program.Main() in d:\Test Projects\EmbedExcel1\EmbedExcel1\Program.cs:line 19 
     at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) 
     at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) 
     at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() 
     at System.Threading.ThreadHelper.ThreadStart_Context(Object state) 
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
     at System.Threading.ThreadHelper.ThreadStart() 
    InnerException:

我该如何解决这个问题？

来源

2017-05-30 user2131048

你说你使用WPF，但堆栈跟踪显示一个Windows窗体应用程序。什么是正确的？ – dymanoid

当Excel窗口最大化时，设置宽度不起作用。

之前设置Width属性应该设置xla.WindowState = xlNormal

来源

2017-05-30 07:27:26 smartobelix

非常感谢..它正在工作.. – user2131048

嗨.. ExcelSettings.xla = new Microsoft.Office.Interop.Excel.Application（）; ws.Cells [1,1] .Font.Bold = true; 当编译器遇到上述行时，它会消耗很多时间（最少20秒）来完成该行。即使我试图在Task.Factory.StartNew中运行这些行，但没有用。请帮我解决这个问题。 – user2131048

20秒来自应用程序启动。 'ExcelSettings.xla = new Microsoft.Office.Interop.Excel.Application（）;'表示新的Excel进程已启动。这一次不能缩短。您可以优化后续操作，即不会在操作等之间关闭Excel。您可以执行哪些操作 - 即在加载程序期间启动Excel以加速后续操作。 – smartobelix

Excel应用程序在设置宽度时出现异常

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