1. IPostBackEventHandle:
void RaisePostBackEvent(string eventArgument);
详细参考:http://msdn.microsoft.com/en-us/library/system.web.ui.ipostbackeventhandler.aspx
2. IPostBackDataHandle:
virtual bool LoadPostData(string postDataKey, NameValueCollection postCollection);
virtual void RaisePostDataChangedEvent();
详细参考:http://msdn.microsoft.com/en-us/library/system.web.ui.ipostbackdatahandler.aspx
总结:
前者一般用于Button类控件的click事件,后者用于TextBox、DropDownList的change事件.
参考:http://www.cnblogs.com/Clingingboy/archive/2006/08/02/466180.html