如何解决此错误：'System.Web.UI.WebControls.TreeView'没有名为'TreeNode'的公共属性 [英] How do I soleve this error: 'System.Web.UI.WebControls.TreeView' does not have a public property named 'TreeNode'

问题描述

嗨

Hi

I have few errors in my code that I need help with. Firstly in this line of code; "<asp:TreeNode Expanded="True" Selected="true" Value="STAFF_WFIN">" I get a warning that TreeNode is unknown element and might be caused by missing web.config file , can I get help with, maybe there's something I did wrong there.

Secondly, when I try to run it I get this error: 'System.Web.UI.WebControls.TreeView' does not have a public property named 'TreeNode'

Code attached.

<asp:treeview id="TreeView1" runat="server" class="cssTreeView" ondblclick="tvwDoubleClick();" oncontextmenu="tvwRightClick();" defaultStyle="font-family:verdana;font-size:8pt;" selectedNodeIndex="0" HelperID="__TreeView1_State__" systemImagesPath="/webctrl_client/1_0/treeimages/" autoSelect="true" onexpand="javascript: if (this.clickedNodeIndex != null) this.queueEvent('onexpand', this.clickedNodeIndex)" oncollapse="javascript: if (this.clickedNodeIndex != null) this.queueEvent('oncollapse', this.clickedNodeIndex)" oncheck="javascript: if (this.clickedNodeIndex != null) this.queueEvent('oncheck', this.clickedNodeIndex)" onselectedindexchange="javascript: if (event.oldTreeNodeIndex != event.newTreeNodeIndex) this.queueEvent('onselectedindexchange', event.oldTreeNodeIndex + ',' + event.newTreeNodeIndex)" onfirequeuedevents="javascript: window.setTimeout('__doPostBack(\'TreeView1\',\'\')', 0, 'JavaScript')" style="height:100%;width:194px;">
			                                   
                                                <asp:TreeNode Expanded="True" Selected="true" Value="STAFF_WFIN">
				                                    Summary Reports
                                                  <asp:TreeNode Expanded="True" NodeData="dbo.vwCS_WFIN_STAFF;/AWDBI/WORK FINALISED/AGE ANALYSIS/DETAILS" ID="WFIN_CUSTAGE">
					                                    Work Finalised </asp:TreeNode>
                                                  <asp:TreeNode Expanded="True" NodeData="dbo.vwCS_WIP_STAFF;/AWDBI/WORK IN PROGRESS/AGE ANALYSIS/DETAILS" ID="WIP_CUSTAGE">
					                                    Work In Progress </asp:TreeNode>
                                                  <asp:TreeNode Expanded="True" NodeData="dbo.vwCS_WREC_STAFF;/AWDBI/WORK RECEIVED/AGE ANALYSIS/DETAILS" ID="WREC_CUSTAGE">
					                                    Work Received </asp:TreeNode>
			                                    </asp:TreeNode>                                               
                                                <asp:TreeNode Expanded="True" Value="STAFF_WIP">
				                                    Work In Progress
                                                    <asp:TreeNode Expanded="True" NodeData="dbo.vwCS_WIP_STAFF;/AWDBI/WORK IN PROGRESS/AGE ANALYSIS" ID="WIP_AGE">
					                                    WIP Age Analysis </asp:TreeNode>
                                                    <asp:TreeNode Expanded="True" NodeData="dbo.vwCS_WIP_STAFF;/AWDBI/WORK IN PROGRESS/AGE ANALYSIS/DETAILS" ID="WIP_CUSTAGE">
					                                    WIP Custom Age </asp:TreeNode>
			                                    </asp:TreeNode>

推荐答案

包装 TreeNode 在节点部分，例如

Wrap the TreeNode's in a Nodes section, e.g.

<asp:treeview runat="server" xmlns:asp="#unknown">
    <nodes>
        <asp:treenode>My First Node</asp:treenode>
    </nodes>
</asp:treeview>

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