[Resolver] Fixed resolve at location bug.

ICSharpCode.NRefactory.CSharp/Resolver/ResolveAtLocation.cs

@@ -79,11 +79,11 @@ namespace ICSharpCode.NRefactory.CSharp.Resolver
 			}
 			
 			InvocationExpression parentInvocation = null;
-			if (node is IdentifierExpression || node is MemberReferenceExpression || node is PointerReferenceExpression) {
+			if ((node is IdentifierExpression || node is MemberReferenceExpression || node is PointerReferenceExpression) && node.Role != Roles.Argument) {
 				// we also need to resolve the invocation
 				parentInvocation = node.Parent as InvocationExpression;
 			}
-			
+
 			CSharpAstResolver resolver = new CSharpAstResolver(compilation, cu, parsedFile);
 			resolver.ApplyNavigator(new NodeListResolveVisitorNavigator(node), cancellationToken);
 			ResolveResult rr = resolver.Resolve(node, cancellationToken);

ICSharpCode.NRefactory.Tests/CSharp/Resolver/ResolveAtLocationTests.cs

@@ -132,5 +132,34 @@ class A { public A() : ba$se() {} }");
 				"public class A { int M(List<int> a) { return a$[1]; } }");
 			Assert.AreEqual(EntityType.Indexer, rr.Member.EntityType);
 		}
+
+		[Test]
+		public void TestBug5114()
+		{
+			var rr = ResolveAtLocation<MethodGroupResolveResult>(
+				@"using System;
+
+namespace Bug5114 
+{
+	class Test
+	{
+		Test oLongPressRecognizer;
+
+		public void AddTarget (Action target)
+		{}
+
+		public void HandleLongPressGesture ()
+		{
+		}
+
+		public Test ()
+		{
+			this.oLongPressRecognizer.AddTarget (this.$HandleLongPressGesture);
+		}
+	}
+}
+");
+			Assert.AreEqual("HandleLongPressGesture", rr.MethodName);
+		}
 	}
 }