Fixed adding of enum items in ASTConverter.

src/Core/Parser/ASTConverter.cs

@@ -1023,7 +1023,7 @@ namespace CppSharp
             {
                 var item = decl.getItems(i);
                 var _item = Visit(item) as AST.Enumeration.Item;
-                _enum.Items.Add(_item);
+                _enum.AddItem(_item);
             }
 
             return _enum;

src/Generator.Tests/AST/TestAST.cs

@@ -160,5 +160,13 @@ namespace CppSharp.Generator.Tests.AST
                 .First();
             Assert.IsTrue(plusOperator.Visit(testVisitor));
         }
+
+        [Test]
+        public void TestASTEnumItemByName()
+        {
+            var @enum = AstContext.FindEnum("TestASTEnumItemByName").Single();
+            Assert.NotNull(@enum);
+            Assert.IsTrue(@enum.ItemsByName.ContainsKey("TestItemByName"));
+        }
     }
 }

tests/Native/AST.h

@@ -19,4 +19,7 @@ namespace Math
     Complex Complex::operator+(Complex &other) {
         return Complex(re + other.re, im + other.im);
     }
-}
+}
+
+// Tests Enum.ItemByName
+enum TestASTEnumItemByName { TestItemByName };