<iewc:TreeNode 不是已知元素。原因可能是网站中存在编译错误，或者缺少web.config文件-CSDN社区

fzf8888 2011-06-20 09:30:33

<iewc:TreeNode 不是已知元素。原因可能是网站中存在编译错误，或者缺少web.config文件

是什么问题？急啊啊啊啊啊啊啊啊啊啊啊

<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls" %>
<HTML>
<HEAD>
<script language="C#" runat="server">
private void Button1_Click(object sender, System.EventArgs e)
{
Response.Write(TreeView1.Nodes[0].Checked);
}
</script>
<script language="javascript">
function set_check()
{
var nodeindex = "0";
var node=TreeView1.getTreeNode(nodeindex);
node.setAttribute("Checked","True");
TreeView1.queueEvent('oncheck', nodeindex);
}
</script>
</HEAD>
<body>
<form id="TestTree" method="post" runat="server">
<iewc:TreeView id="TreeView1" runat="server">
<iewc:TreeNode CheckBox="True" Text="Node0"></iewc:TreeNode>
</iewc:TreeView>
<br/>
<input type="button" value="set check" onclick="set_check()">
<br/>
<asp:Button id="Button1" runat="server" Text="submit" OnClick="Button1_Click"></asp:Button>
</form>
</body>
</HTML>

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