StateBag.Remove(String) 方法

参考

定义

命名空间:: System.Web.UI

程序集:: System.Web.dll

重要

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将指定的密钥/值对从 StateBag 对象中移除。

public:
 void Remove(System::String ^ key);

public void Remove (string key);

member this.Remove : string -> unit

Public Sub Remove (key As String)

参数

key: String

要移除的项。

示例

下面的代码示例演示如何使用 Remove 该方法。

void MovePiece(string fromPosition, string toPosition) {
   StateBag bag = ViewState;
   object piece = bag[fromPosition];
   if (piece != null) {
      bag.Remove(fromPosition);
      bag.Add(toPosition, piece);
      RenderBoard();
   }
   else {
      throw new InvalidPositionException("There is no game piece at the \"from\" position."); 
   }
}

Sub MovePiece(fromPosition As String, toPosition As String)
   Dim bag As StateBag = ViewState
   Dim piece As Object = bag(fromPosition)
   If Not (piece Is Nothing) Then
      bag.Remove(fromPosition)
      bag.Add(toPosition, piece)
      RenderBoard()
   Else
      Throw New InvalidPositionException("There is no game piece at the ""from"" position.")
   End If
End Sub 'MovePiece

适用于

通过

参数

示例

适用于

另请参阅