GridView1与数据库的更新问题

Question

如上图点击了完后在GridView启用了修改功能
但运行过程中更新不了数据库没更新到页面也更新不了！

Answer 1

还要绑定一下
this.gridview1.databind()

Answer 2

 protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                
                this.GridView1.DataSource = ReturnDataTable("select * from tablename(你的表名)");
                this.GridView1.DataBind();
               
            }
        }
        /// <summary>
        /// 执行有参的查询 返回DataTable
        /// </summary>
        /// <returns>返回DataTable</returns>
        public static DataTable ReturnDataTable(string cmdtext)
        {
            SqlConnection cn = new SqlConnection();
            cn.ConnectionString = "数据库连接字符串";
            DataTable dt = new DataTable();
            SqlCommand cmd = new SqlCommand();
            cmd = new SqlCommand(cmdtext, cn);
            cmd.CommandType = CommandType.Text; ;
            SqlDataReader dr = null;
            using (dr = cmd.ExecuteReader(CommandBehavior.CloseConnection))
            {
                dt.Load(dr);
            }
            return dt;
        }