gridview的更新和删除如何实现？

我用的网上找的这段代码    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
         try
             {
                 string userid = GridView1.DataKeys[e.RowIndex].Value.ToString();//获取主键
                 GridViewRow myrow = GridView1.Rows[e.RowIndex];
                 string name = ((TextBox)myrow.Cells[1].Controls[0]).Text;//获取选中行单元格数据
                 string pwd = ((TextBox)myrow.Cells[2].Controls[0]).Text;                 string sql = "update checker set CheckerName='" + name + "',CheckerPwd='" + pwd + "' where CheckerID='"+userid+"'";
                 SqlHelper.ExcuteQuery(sql);                 GridView1.EditIndex = -1;
                 this.BindGridView();                
             }
             catch (Exception ex)
             {
                 Response.Write(ex.Message);
             }
    }
运行时候，报错~~
 “Manage”并不包含“BindGridView”的定义 E:\2046\生鲜检品\Manager.aspx.cs 37 23 E:\2046\生鲜检品\