Hello!
Example
<%@ Page Language="C#" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<script runat="server">
protected void Button_Click(object sender, DirectEventArgs e)
{
String id = e.ExtraParams["id"];
X.Msg.Alert("DirectEvent", "id = " + id).Show();
}
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Ext.NET Example</title>
</head>
<body>
<form runat="server">
<ext:ResourceManager runat="server" />
<ext:TreePanel ID="TreePanel1" runat="server" Height="300">
<Root>
<ext:TreeNode Text="Composers" Expanded="true">
<Nodes>
<ext:TreeNode Text="Beethoven" Expanded="true">
<Nodes>
<ext:TreeNode Text="Concertos" Expanded="true">
<Nodes>
<ext:TreeNode Text="Concert 1" />
<ext:TreeNode Text="Concert 2" />
</Nodes>
</ext:TreeNode>
</Nodes>
</ext:TreeNode>
</Nodes>
</ext:TreeNode>
</Root>
<Buttons>
<ext:Button runat="server" Text="Get id">
<DirectEvents>
<Click OnEvent="Button_Click">
<ExtraParams>
<ext:Parameter Name="id" Value="#{TreePanel1}.getSelectionModel().getSelectedNode().id" Mode="Raw"/>
</ExtraParams>
</Click>
</DirectEvents>
</ext:Button>
</Buttons>
</ext:TreePanel>
</form>
</body>
</html>
