// Front-end
<% @ Page Language = "C #" autoeventwireup = "true" codefile = "ext_win.aspx.cs" inherits = "ext_ext_win" %>
<% @ Register Assembly = "coolite. Web. UI" namespace = "coolite. Web. UI" tagprefix = "cool" %>
<! 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 for Windows </title>
</Head>
<Body>
<Form ID = "form1" runat = "server">
<Div>
<Cool: scriptmanager id = "scriptmanager1" runat = "server"/>
<Cool: Window id = "window1" runat = "server" collapsible = "true">
<Content>
The first ext pop-up window
</Content>
</Cool: WINDOW>
<Cool: button id = "button1" runat = "server" text = "Submit" onclick = "button#click">
</Cool: button>
</Div>
</Form>
</Body>
</Html>
// Background
Protected void button#click (Object sender, eventargs E)
{
This. window1.autoshow = true;
}