2014-05-23 186 views
1

我正在创建MS Word VSTO。在VSTO中,我添加了一个自定义任务窗格,在MS Word的右侧显示我的用户控件。这是添加自定义任务窗格的代码片段。MS Word中的自定义任务窗格未加载

Public WithEvents _taskPane As Microsoft.Office.Tools.CustomTaskPane 
Private myTaskPaneCollection As Microsoft.Office.Tools.CustomTaskPaneCollection 

myTaskPaneCollection = Globals.Factory.CreateCustomTaskPaneCollection _ 
        (Nothing, Nothing, "CustomTaskPanes", "CustomTaskPanes", Me) 
_taskPane = myTaskPaneCollection.Add(dvPanel, My.Resources.dvTaskPane) 
_taskPane.Control.Dock = Windows.Forms.DockStyle.Left 
_taskPane.DockPosition = Microsoft.Office.Core.MsoCTPDockPosition.msoCTPDockPositionRight 
_taskPane.DockPositionRestrict = MsoCTPDockPositionRestrict.msoCTPDockPositionRestrictNoHorizontal 
_taskPane.Width = 300 
_taskPane.Visible = True 

注意:DVPANEL是我的用户控件,它将显示有关打开的Document的matadata。

I have written this code at Application.DocumentOpen() function as I want to display task pane only when any document is opened. It work fine when i run it from MS Visual Studio. But when I opened any Document from my application. It fails. Here is the snapshot of actual error. 

enter image description here

我寻觅了很多,但无法获得更多的信息。这是我已经提到的一个链接。 http://social.msdn.microsoft.com/forums/vstudio/en-US/205cdc8b-3b20-4cb8-ad30-c6177e9f8435/argument-null-reference-exception-project-addin

在此先感谢。等待好的回应。

回答

1

试试这个

 
Imports Microsoft.Office.Core 

Public Class TaskPanes 

    Private _panes As Microsoft.Office.Tools.CustomTaskPaneCollection 

    Public Sub AddTaskPane(ByVal cntl As System.Windows.Forms.UserControl, ByVal paneName As String) 

     _panes = Globals.ThisAddIn.CustomTaskPanes 
     Dim pane As Microsoft.Office.Tools.CustomTaskPane = _panes.Add(cntl, paneName) 

     pane.Control.Dock = Windows.Forms.DockStyle.Left 
     pane.DockPosition = Microsoft.Office.Core.MsoCTPDockPosition.msoCTPDockPositionRight 
     pane.DockPositionRestrict = MsoCTPDockPositionRestrict.msoCTPDockPositionRestrictNoHorizontal 
     pane.Width = 300 
     pane.Visible = True 

    End Sub 

End Class 
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