是不是整 2006 ?

回这贴的时候出错：
============================
Specified cast is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidCastException: Specified cast is not valid.

Source Error:

Line 334: case MessageAction.View:
Line 335: // 在显示的贴子后面跟贴
Line 336: ForumSystem.AddMessage( board.BoardName, message.MessageGlobalID, SecureSystem.CurrentUser, fmTopic, fmBody, fmMsgBodyFormat, fmFace );
Line 337: Response.Redirect( ForumSystem.GetBoardUrl( board ) );
Line 338: break;


Source File: d:\zhaix\websites\cndev.org#www\forum\msg.aspx.cs Line: 336