Gridview更新的时候怎么老取不到新值？？？

Question

各位大大，Gridview更新的时候怎么老取不到新值？？？

Answer 1

是否有在Page_Load写
if(IsPostBack)
{
//绑定数据
}

Answer 2

不然参考:
http://blog.csdn.net/insus/archive/2008/03/30/2229898.aspx

Answer 3

把Gridview视图状态EnableViewState设FALSE

Answer 4

就是点击GridView的编辑按钮（COmmandField)后进入GridView的编辑状态，修改字段值后再点击更新保存刚才的修改时，发现根本没作改变，后跟踪发现从GridView取到的新值是空的。。相关代码如下：switch (e.CommandName)
        {
            //编辑
            case "Edit":
                GV.EditIndex = index;
                break;            //修改
            case "Update":
                sUserID = GV.Rows[index].Cells[1].Text.ToString();;
                Hashtable ht = new Hashtable();
                ht.Add("sRoleID",((TextBox)GV.Rows[index].Cells[2].Controls[0]).Text.ToString());
                lrole.Update(ht);
                GV.EditIndex = -1;
                break;            //取消
            case "Cancel":
                GV.EditIndex = -1;
                break;            //删除
            case "Delete":
                lrole.sUserID = GV.Rows[index].Cells[1].Text.ToString();
                lrole.Delete(); //利用Cart的Remove方法,删除某种图书
                break;
            default:
                break;
        }
        Query();有sPostBack，，， protected void Page_Load(object sender, System.EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            InitData();
            Query();
        }
    }

Answer 5

造孽呀，自己代码错了//修改
            case "Update":
                sUserID = GV.Rows[index].Cells[1].Text.ToString();;
                Hashtable ht = new Hashtable();
                ht.Add("sRoleID",((TextBox)GV.Rows[index].Cells[2].Controls[0]).Text.ToString());
                lrole.Update(ht);
                GV.EditIndex = -1;
                break; 改成
//修改
            case "Update":
                sUserID = ((TextBox)GV.Rows[index].Cells[1].Controls[0]).Text.ToString();
                Hashtable ht = new Hashtable();
                ht.Add("sUserID", sUserID);
                ht.Add("sRoleID",((TextBox)GV.Rows[index].Cells[2].Controls[0]).Text.ToString());
                lrole.Update(ht);
                GV.EditIndex = -1;
                break;