Merge pull request #55 from jogibear9988/patch-1

Fix Nullable Enums from String

Author: StefH

src/System.Linq.Dynamic.Core/ExpressionParser.cs

@@ -607,7 +607,7 @@ Expression ParseComparison()
                             object wrt = null;
                             if (constantExpr.Value is string)
                             {
-                                wrt = Enum.Parse(left.Type, constantExpr.Value as string, true);
+                                wrt = Enum.Parse(GetNonNullableType(left.Type), constantExpr.Value as string, true);
                             }
                             else
                             {
@@ -620,7 +620,7 @@ Expression ParseComparison()
                             object wrt = null;
                             if (constantExpr.Value is string)
                             {
-                                wrt = Enum.Parse(right.Type, constantExpr.Value as string, true);
+                                wrt = Enum.Parse(GetNonNullableType(right.Type), constantExpr.Value as string, true);
                             }
                             else
                             {
@@ -2441,4 +2441,4 @@ internal static void ResetDynamicLinqTypes()
             _keywords = null;
         }
     }
-}
+}