protected void grv_back_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     if (e.CommandName == "del")
     {
         PolicyManageService.Delete(this.CurrentUser.UserName, Guid.Parse(e.CommandArgument.ToString()));
         QueryBackPolicy(grv_back.PageIndex + 1);
     }
 }
 protected void btnDel_Click(object sender, EventArgs e)
 {
     if (GetCheckBoxValue())
     {
         var list_ids = hidIds.Value.Split(',').Select(item => Guid.Parse(item)).ToArray();
         PolicyManageService.Delete(this.CurrentUser.UserName, list_ids);
         QueryBackPolicy(grv_back.PageIndex + 1);
     }
 }