我正在使用 UpdatePanel 到 DetailsView,其中有一个 DropDonwList。DropDownList 工作在 DetailView 中找到,但我无法从代码隐藏文件中的 DropDownList 中获取选定值。以下是 ASP.NET 代码:
<asp:ScriptManagerProxy ID="ScriptManagerProxy1" runat="server"></asp:ScriptManagerProxy>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:DetailsView ID="detailsView_User" runat="server" AutoGenerateRows="False"
DefaultMode="Insert">
<Fields>
<asp:BoundField DataField="Name" HeaderText="User Name" SortExpression="Name" ControlStyle-Width="200" />
<asp:TemplateField>
<InsertItemTemplate>
<asp:DropDownList ID="dropDownList_Agency" runat="server" SelectMethod="GetAllAgency" AutoPostBack="true" OnSelectedIndexChanged="dropDownList_Agency_SelectedIndexChanged"></asp:DropDownList><br />
<asp:DropDownList ID="dropDownList_Department" runat="server" SelectMethod="GetAllDepartment" AutoPostBack="true"></asp:DropDownList><br />
<asp:Button ID="button_Cancel" runat="server" Text="Cancel" OnClick="button_Cancel_Click"/>
<asp:Button ID="button_CreateUser" runat="server" Text="Create User"/>
</InsertItemTemplate>
</asp:TemplateField>
</Fields>
</asp:DetailsView>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="detailsView_User" />
</Triggers>
</asp:UpdatePanel>
当我尝试 SelectedValue
dropDownList_Agency.SelectedValue;
我收到此错误:当前上下文中不存在名称“dropDownList_Agency”
我不知道为什么。你有解决方案的想法吗?