点击gridview编辑状态下的更新怎么获取不到textbox改变之后的值？

Question

后台代码protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            int VoteItemId = Convert.ToInt32(this.GridView1.DataKeys[e.RowIndex].Value);
            TextBox tb_Item = this.GridView1.Rows[e.RowIndex].FindControl("txtIName") as TextBox;
            
            string ItemName = tb_Item.Text;
}前台
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
                            DataKeyNames="VoteItemID" onrowcancelingedit="GridView1_RowCancelingEdit" 
                            onrowcommand="GridView1_RowCommand" onrowdatabound="GridView1_RowDataBound" 
                            onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating">
                            <Columns>
                                <asp:TemplateField HeaderText="投票项">
                                      <ItemTemplate>
                                           <%#Eval("ItemContent")%> 
                                      </ItemTemplate>
                                      <EditItemTemplate>
                                          <asp:TextBox ID="txtIName" runat="server" Text='<%#Eval("ItemContent")%>'></asp:TextBox>
                                      </EditItemTemplate>
                                </asp:TemplateField>
 </Columns>
</asp:GridView>描述   当我点击更新后string ItemName = tb_Item.Text怎么是刚刚绑定上的值，而不是我刚刚输入的值？  

Answer 1

你看看protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
        }
    }
是不是少 if (!IsPostBack)
        {
        }