DATAGRID删除最后一行时出错的解决办法

public int lastEditPage;

try
{
cmd.ExcuteNonquery();
lastEditPage=dgPagerDel.CurrentPageIndex;
if((dgPagerDel.PageCount-dgPagerDel.CurrentPageIndex==1&&dgPagerDel.Items.Count==1)
{
if(dgPagerDel.pageCount>1)
{
lastEditPage=lastEditPage-1;
}
else
{
lastEditPage=0;
}
dgPagerDel.CurrentPageIndex=lastEditPage;
this.BindGrid();
}
}