protected void NewProducts_OnDeleteCommand(object sender, GridViewDeleteEventArgs e)
    {        Response.Write("<script>confirm('确定要删吗?');</script>");  
        if()
          {
              delete();
           }  
        else
         {.....}    
    }
如何让它confirm('确定要删吗?')返回一个值然后判断后执行删除或者取消操作?