/usr/share/asp.net-demos/1.1/asp.net/registertest1.ascx is in asp.net-examples 3.8-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | <script language="C#" runat="server">
public String Color = "blue";
public String Text = "This is registertest1!";
</script>
<span id="Message" style="color:<%=Color%>"><%=Text%></span>
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