avoid using string to check the exception type

Author: ketttY

main/src/addins/MonoDevelop.Debugger.VSCodeDebugProtocol/MonoDevelop.Debugger.VsCodeDebugProtocol/VSCodeDebuggerSession.cs

@@ -168,7 +168,7 @@ void UpdateExceptions ()
 				currentExceptionState = hasCustomExceptions;
 				var exceptionRequest = new SetExceptionBreakpointsRequest (
 					Capabilities.ExceptionBreakpointFilters.Where (f => hasCustomExceptions || (f.Default ?? false)).Select (f => f.Filter).ToList ());
-				exceptionRequest.ExceptionOptions = new List<ExceptionOptions> () { new ExceptionOptions (ExceptionBreakMode.Unhandled)};
+				exceptionRequest.ExceptionOptions = new List<ExceptionOptions> () {new ExceptionOptions(ExceptionBreakMode.UserUnhandled)};
 				protocolClient.SendRequest (exceptionRequest, null);
 				unhandleExceptionRegistered = true;
 			}
@@ -352,6 +352,7 @@ bool ShouldStopOnExceptionCatchpoint (Catchpoint catchpoint, int frameId)
 			return string.IsNullOrWhiteSpace (catchpoint.ConditionExpression) || EvaluateCondition (frameId, catchpoint.ConditionExpression) != false;
 		}
 
+
 		protected void HandleEvent (object sender, EventReceivedEventArgs obj)
 		{
 			Task.Run (() => {
@@ -408,7 +409,8 @@ protected void HandleEvent (object sender, EventReceivedEventArgs obj)
 							// It's OK to evaluate expressions in external code
 							stackFrame = (VsCodeStackFrame)backtrace.GetFrame (0);
 						}
-						if (body.Text.Contains (GettextCatalog.GetString ("but was not handled in user code"))){
+						var response = protocolClient.SendRequestSync (new ExceptionInfoRequest (body.ThreadId ?? -1));
+						if (response.BreakMode.Equals (ExceptionBreakMode.UserUnhandled)) {
 							args = new TargetEventArgs (TargetEventType.UnhandledException);
 						} else {
 							if (!breakpoints.Select (b => b.Key).OfType<Catchpoint> ().Any (c => ShouldStopOnExceptionCatchpoint (c, stackFrame.frameId))) {