我在 asp:repeater 的项模板中有一个下拉列表,如何在按钮单击事件中获取其值。
<asp:Repeater runat="server" ID="WorkflowListAfter" onitemcreated="WorkflowListAfterItemCreated">
<ItemTemplate>
<asp:DropDownList ID="ddlWorkflowMembers" runat="server" DataTextField="MemberName" DataValueField="MemberID">
</ItemTemplate>
</asp:Repeater>
protected DropDownList ddlWorkflowMembers = new DropDownList();
protected void WorkflowListAfterItemCreated(object sender, RepeaterItemEventArgs e)
{
ddlWorkflowMembers = (DropDownList) e.Item.FindControl("ddlWorkflowMembers");
}
protected void BtnSaveClick(object sender, EventArgs e) {
if (ddlWorkflowMembers.SelectedItem == null) return;
}
上述代码在第一次运行时正常工作,但在后续的Postback之后,ddlWorkflowMembers始终为null异常。
WorkflowListAfter.DataBind()
吗? - Sergey Rybalkin