非常好的.net学习经验记录

				  try 
				    { 
				        this.DataGrid1.DataBind(); 
				    } 
				    catch 
				    { 
				        //判断当前页的索引是否正确 
				        if(DataGrid1.CurrentPageIndex < 0 || DataGrid1.CurrentPageIndex>=DataGrid1.PageCount) 
				        { 
				            DataGrid1.CurrentPageIndex = DataGrid1.CurrentPageIndex -1; 
				        } 
				        this.DataGrid1.DataBind(); 
				    }