Debugging Windows forms applications hosted in IE

I've adapted the Microsoft Sample SimpleControl as a test bed. I'm trying to understand how to debug and avoid security exceptions. I launch my application from IE using the link
<A href="simplehost.exe?arguement">link to program </A> and attach the debugger via the Processes dialog.

If my code looks like this:

public static void Main(string[] args)
{
Application.Run(new HostApp());

try
{
Environment.GetCommandLineArgs();
}
catch (SecurityException se)
{
System.Console.WriteLine(se.Message + se.PermissionType);
}
}

I'm able to set a breakpoint at Environment.GetCommandLineArgs(), its hit, I get the security exception. So far so good.

But if I expand my code to:

try
{
System.Collections.ArrayList argList = new System.Collections.ArrayList();
string[] cl = null;
cl = Environment.GetCommandLineArgs();

if( cl.Length > 1 )
{
string url = cl[1];
int delimiter = url.IndexOf('?');
if( delimiter >= 0 )
{
string qs = url.Substring(delimiter + 1);
HttpRequest request = new HttpRequest("", url, qs);

foreach( string key in request.QueryString.Keys )
{
foreach( string value in request.QueryString.GetValues(key) )
{
if( (key != null) && (key.Length > 0) )
{
argList.Add(key + "=" + value);
}
else
{
argList.Add(value);
}
}
}
}
}
}
catch (SecurityException se)
{
System.Console.WriteLine(se.Message + se.PermissionType);
}

I never get to the breakpoint, I just get a SecurityException.
What happened? Why does my breakpoint seem to get lost.

I'm getting very frustrated.

Frustrated in .NET deployment land
Mark Levison

[1910 byte] By [codefund.com] at [2008-2-15]