UndoContext.Close 方法

结束撤消操作。

命名空间:  EnvDTE
程序集:  EnvDTE(在 EnvDTE.dll 中)

语法

声明
Sub Close
void Close()
void Close()
abstract Close : unit -> unit 
function Close()

备注

如果有对 UndoContext 对象的挂起引用,则 Close 中止该操作并引发一个错误。 调用 Close 时,如果 UndoContext 对象未打开,则将出现错误。

示例

Sub RemoveNewLines()
   ' Before running, select text in an open document.
   Dim txtSel As TextSelection
   Dim strTS As String, boolWasOpen As Boolean
   txtSel = DTE.ActiveDocument.Selection
   strTS = txtSel.Text

   ' Check to see if UndoContext object is already open.
   If DTE.UndoContext.IsOpen = True Then
      boolWasOpen = True
   Else
      ' Open the UndoContext object to track changes.
      DTE.UndoContext.Open("RemoveNewLines", False)
   End If

   ' Perform search for newline characters and remove them.
   If strTS <> "" Then
      txtSel.Delete()
      strTS = Replace(strTS, vbNewLine, "", Compare:=vbTextCompare)
      txtSel.Insert(strTS)
   End If

   ' If UndoContext was already open, don't close it.
   If boolWasOpen = False Then
      ' Close the UndoContext object to commit the changes.
      DTE.UndoContext.Close()
   End If
End Sub

.NET Framework 安全性

请参见

参考

UndoContext 接口

EnvDTE 命名空间