Append method IsDirectoryEmpty

ZeroLevel/Services/FileSystem/FSUtils.cs

@@ -304,5 +304,10 @@ namespace ZeroLevel.Services.FileSystem
                 }
             }
         }
+
+        public static bool IsDirectoryEmpty(string path)
+        {
+            return !Directory.EnumerateFileSystemEntries(path).Any();
+        }
     }
 }

ZeroLevel/Services/Serialization/MessageSerializer.cs

@@ -77,6 +77,10 @@ namespace ZeroLevel.Services.Serialization
 
         public static byte[] SerializeCompatible(object obj)
         {
+            if (null == obj)
+            {
+                return null;
+            }
             var direct_seriazlizable = (obj as IBinarySerializable);
             if (direct_seriazlizable != null)
             {
@@ -95,6 +99,10 @@ namespace ZeroLevel.Services.Serialization
 
         public static byte[] SerializeCompatible<T>(T obj)
         {
+            if (null == obj)
+            {
+                return null;
+            }
             var direct_seriazlizable = (obj as IBinarySerializable);
             if (direct_seriazlizable != null)
             {