More progress

src/Core/Utility/MiscUtility.cs

@@ -10,9 +10,21 @@ namespace UnityExplorer
     {
         private static CultureInfo _enCulture = new CultureInfo("en-US");
 
+        /// <summary>
+        /// Check if a string contains another string, case-insensitive.
+        /// </summary>
         public static bool ContainsIgnoreCase(this string _this, string s)
         {
             return _enCulture.CompareInfo.IndexOf(_this, s, CompareOptions.IgnoreCase) >= 0;
         }
+
+        /// <summary>
+        /// Just to allow Enum to do .HasFlag() in NET 3.5
+        /// </summary>
+        public static bool HasFlag(this Enum flags, Enum value)
+        {
+            ulong num = Convert.ToUInt64(value);
+            return (Convert.ToUInt64(flags) & num) == num;
+        }
     }
 }