如何在wpf中的excel上下文菜单上打开window.xaml文件

Question

我想在Excel的上下文菜单（右键单击）上打开一个新窗口。

为此，我打开了一个Excel文件，并在右键单击时添加了Go to Link菜单，但是当我单击此菜单时，它不会打开一个窗口并显示错误消息"STA thread attribute must be defined"。

以下是代码。

Excel.Application _Excel = new Excel.Application();

Excel.Worksheet WS = new Excel.Worksheet(); 
Excel.Workbook WB;

Object defaultArg = Type.Missing;

try
 {
    _Excel.Visible = true;

    CommandBar cellbar = _Excel.CommandBars["Cell"];
    CommandBarButton button =(CommandBarButton)cellbar.FindControl(MsoControlType.msoControlButton, 0, "MYRIGHTCLICKMENU", Missing.Value, Missing.Value);
    if (button == null)
    {
       // add the button
       button = (CommandBarButton)cellbar.Controls.Add(MsoControlType.msoControlButton, Missing.Value, Missing.Value, cellbar.Controls.Count, true);
       button.Caption = "Go to Link";
       button.BeginGroup = true;
       button.Tag = "MYRIGHTCLICKMENU";
       button.Click += new _CommandBarButtonEvents_ClickEventHandler(MyButton_Click);
    }

   WB = _Excel.Workbooks.Open(pathToFile, defaultArg, defaultArg, defaultArg, defaultArg,
                                            defaultArg, defaultArg, defaultArg, defaultArg,
                                            defaultArg, defaultArg, defaultArg, defaultArg,
                                            defaultArg, defaultArg);

 System.Runtime.InteropServices.Marshal.FinalReleaseComObject(WB);

 System.Runtime.InteropServices.Marshal.FinalReleaseComObject(_Excel);


 }
 catch (Exception ex)
 {
  // WB.Close(false, Type.Missing, Type.Missing);

   throw;
 }

private void MyButton_Click(CommandBarButton cmdBarbutton, ref bool cancel)
{
   Window m = new Window();
   m.showDialog();  
}

任何建议都会有很大的帮助。