Message in Chinese (Simplified) (中文(简体))
ID2004: IAsyncResult 必须是从 Begin 调用返回的 AsyncResult 实例。运行时需要“<var>X</var>”,而实际类型为“<var>Y</var>”。
Unlocalized message
ID2004: IAsyncResult must be the AsyncResult instance returned from the Begin call. The runtime is expecting '<var>X</var>', and the actual type is '<var>Y</var>'.
Search by Google