System.Diagnostics.AssertWrapper.ShowMessageBoxAssert C# (CSharp) Method

        private static void ShowMessageBoxAssert(string stackTrace, string message, string detailMessage) {
            string fullMessage = message + "\r\n" + detailMessage + "\r\n" + stackTrace;


            int flags = 0x00000002 /*AbortRetryIgnore*/ | 0x00000200 /*DefaultButton3*/ | 0x00000010 /*IconHand*/ |
                        0x00040000 /* TopMost */;


            if (IsRTLResources)
                flags = flags | SafeNativeMethods.MB_RIGHT | SafeNativeMethods.MB_RTLREADING;
                
            int rval = SafeNativeMethods.MessageBox(NativeMethods.NullHandleRef, fullMessage, SR.GetString(SR.DebugAssertTitle), flags);
            switch (rval) {
                case 3: // abort
                    new SecurityPermission(SecurityPermissionFlag.UnmanagedCode).Assert();
                    try {
                        Environment.Exit(1);
                    }
                    finally {
                        CodeAccessPermission.RevertAssert();    
                    }
                    break;
                case 4: // retry
                    if (!System.Diagnostics.Debugger.IsAttached) {
                        System.Diagnostics.Debugger.Launch();
                    }
                    System.Diagnostics.Debugger.Break();
                    break;
            }
        }