Mega Code Archive
Use the SqlHierarchicalDataSource control when working with the TreeView control
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<%@ Page Language="C#" %>
<%@ Register TagPrefix="custom" Namespace="MyNamespace" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
{
lblSelected.Text = TreeView1.SelectedValue;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show TreeView</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TreeView
id="TreeView1"
DataSourceID="srcDiscuss"
OnSelectedNodeChanged="TreeView1_SelectedNodeChanged"
ImageSet="News"
Runat="server">
<DataBindings>
<asp:TreeNodeBinding
TextField="Subject"
ValueField="MessageId" />
</DataBindings>
</asp:TreeView>
<custom:SqlHierarchicalDataSource
id="srcDiscuss"
ConnectionString='<%$ ConnectionStrings:Discuss %>'
DataKeyName="MessageId"
DataParentKeyName="ParentId"
SelectCommand="SELECT MessageId,ParentId,Subject FROM Discuss"
Runat="server" />
<hr />
You selected message number:
<asp:Label
id="lblSelected"
Runat="server" />
</div>
</form>
</body>
</html>
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