protected void rptList_ItemCommand(object source, RepeaterCommandEventArgs e)
 {
     if (e.CommandName == "del")//如果是删除命令
     {
         int         roleId = Convert.ToInt32(e.CommandArgument.ToString());
         UserRoleBll bll    = new UserRoleBll();
         if (bll.Delete(roleId, null) > 0)
         {
             Response.Write("<script>alert('删除成功!');window.location.href='RoleList.aspx'</script>");
         }
         else
         {
             Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('删除失败!');</script>");
         }
     }
 }