我正在使用一个更新面板,其中有一个树视图控件。我用同样的方法写了一个异步触发器。我遇到了一个我无法解决的错误,因为我第一次看到它。我的控件在更新面板中也出现了这个错误,但是当我用于$
分离父母和孩子时,这个错误得到了解决。现在我在查找事件名称时遇到问题。以下是我的错误
Could not find an event named 'PopulateNode' on associated control 'TreeView_Parent_Child' for the trigger in UpdatePanel '_updatepnlTreeview'.
我的代码是
<asp:Panel ID="Panel1" Visible="true" runat="server"
ScrollBars="Auto">
<div style="overflow: auto; height: 400px; width:230px; border-right: solid; border-right-color: gray">
<asp:UpdatePanel ID="_updatepnlTreeview" UpdateMode="Conditional" runat="server">
<ContentTemplate>
<asp:TreeView ID="TreeView_Parent_Child" EnableClientScript="true" align="left"
AutoGenerateDataBindings="true" LeafNodeStyle-ForeColor="Black" NodeStyle-ForeColor="Black"
PopulateNodesFromClient="true" runat="server" Font-Names="Arial"
OnTreeNodePopulate="PopulateNode"
HoverNodeStyle-BackColor="ActiveBorder" Font-Size="Small" ImageSet="Arrows" NodeStyle-HorizontalPadding="5px">
<HoverNodeStyle Font-Bold="true" BackColor="Beige" />
<Nodes>
</Nodes>
<NodeStyle ForeColor="Black" />
<LeafNodeStyle ForeColor="Black" />
</asp:TreeView>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="TreeView_Parent_Child" EventName="PopulateNode" />
</Triggers>
</asp:UpdatePanel>
</div>
</asp:Panel>