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RadTreeView for ASP.NET AJAX Version Q3 2008 released 11/25/2008 (release history)
Run example in:
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Chocolade
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Example Source Code & Description
This example demonstrates RadTreeView's validation support. By using a RequiredFieldValidator control you can verify that your users
have selected a tree node:
<telerik:RadTreeView runat="server" ID="RadTreeView1">
<Nodes>
<telerik:RadTreeNode Text="Node 1">
<Nodes>
<telerik:RadTreeNode Text="Node 1.1" />
<telerik:RadTreeNode Text="Node 1.2" />
</Nodes>
</telerik:RadTreeNode>
</Nodes>
</telerik:RadTreeNode>
<asp:RequiredFieldValidator runat="server"
ID="RequiredFieldValidator1"
ControlToValidate="RadTreeView1"
ErrorMessage="Please select a node"
/>
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