You don't want to clear the stack. You are most probably getting this
error because you have somehow initiated a recursion that doesn't ever
return. This results in a stack overflow because for each call to a
method, the stack is used to store the return "address" for the call.

You should have a look at the call stack (one of the debugger windows)
you get in VS when this exception is thrown, to find out where exactly
the problem occurs.

               Oliver Sturm

That would fix the symptom rather than the problem (even if it were
possible, which it isn't). Chances are you're recursing too deeply. A
common source of this problem is making a property refer to itself, eg:

public int Foo
{
   get
   {
       return Foo;
   }
   set
   {
       Foo = value;
   }
}

If that's not it, could you post a short but complete program which
demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

I bet you've used a property name within the accessor for the property such
as:

int foo
{
   get{return foo;}
   set{foo=value;}
}