我正在尝试在dropdownlist的indexchange事件上为hiddenfield赋值!其实问题是当我试图更新我的记录时,我无法找到隐藏字段的值!请给我解决方案或建议任何其他选项!谢谢 !在gridview中的boundfield中找不到值?
我的网格视图是
<asp:TemplateField HeaderText="LocCode" SortExpression="LocCode">
<EditItemTemplate>
<ajax:UpdatePanel ID="upEditsLocation" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:DropDownList ID="ddlLocation" runat="server"
DataSourceID="sdsLocation"
OnDataBound="ddlLocation_DataBound"
DataValueField="LocCode" AppendDataBoundItems="false"
DataTextField="LocCode"
AutoPostBack="true"
onselectedindexchanged="ddlLocation_SelectedIndexChanged">
</asp:DropDownList>
<asp:SqlDataSource ID="sdsLocation" runat="server" ConnectionString="<%$ ConnectionStrings:ccConnString %>"
ProviderName="<%$ ConnectionStrings:CCConnString.ProviderName %>" SelectCommand="Select LocCode from Location">
</asp:SqlDataSource>
</ContentTemplate>
</ajax:UpdatePanel>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblLocation" runat="server" Text='<%# Bind("LocCode") %>'>
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
和我indexchange事件是
protected void ddlLocation_SelectedIndexChanged(object sender, EventArgs e)
{
hdloc.Value = ddlLocation.SelectedItem.Text;
}
我的隐藏字段是
<asp:HiddenField ID="hdloc" runat="server" />
隐藏字段放置在哪里?你的数据绑定控制之外? –
是的!但值分配给隐藏的领域,但我不能访问它后面的代码!当我尝试访问它时,我不知道实际的问题它给null! – Chintan
什么不能访问hdloc或ddlLocation? –