1.在xx.aspx.cs中實現彈出視窗，暫時有兩種方法可以實現

        protected void btn_Delete_Click(object sender, EventArgs e)//登出賬號
        {
            Response.Write("<script>alert('要登出賬號嗎 ? ');</script>");
        }

        protected void btn_Delete_Click(object sender, EventArgs e)//登出賬號
        {
           this.btn_Delete .Attributes.Add("onclick", "return confirm('要登出賬號嗎?');");
           
        }