Page.HasControls property
<%@ Page Language="vb" %>
<html>
<head>
<title>HasControls method example</title>
<script runat="server">
Sub Page_Load()
If Page.HasControls = True Then
Message.Text = "The page contains controls."
Else
Message.Text = "The page does not contain controls."
End If
End Sub
</script>
</head>
<body>
<asp:label id="Message" runat="server"/>
</body>
</html>
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