Utilities: KeyValuePairList: Moved Sort logic to partial class

Utilities/Generics/KeyValuePairList.Sort.cs

@@ -0,0 +1,44 @@
+/* Copyright (C) 2012-2020 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
+ * 
+ * You can redistribute this program and/or modify it under the terms of
+ * the GNU Lesser Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ */
+using System.Collections.Generic;
+using System.ComponentModel;
+
+namespace Utilities
+{
+    public partial class KeyValuePairList<TKey, TValue>
+    {
+        new public void Sort()
+        {
+            this.Sort(Comparer<TKey>.Default);
+        }
+
+        public void Sort(ListSortDirection sortDirection)
+        {
+            Sort(Comparer<TKey>.Default, sortDirection);
+        }
+
+        public void Sort(IComparer<TKey> comparer, ListSortDirection sortDirection)
+        {
+            if (sortDirection == ListSortDirection.Ascending)
+            {
+                Sort(comparer);
+            }
+            else
+            {
+                Sort(new ReverseComparer<TKey>(comparer));
+            }
+        }
+
+        public void Sort(IComparer<TKey> comparer)
+        {
+            this.Sort(delegate(KeyValuePair<TKey, TValue> a, KeyValuePair<TKey, TValue> b)
+            {
+                return comparer.Compare(a.Key, b.Key);
+            });
+        }
+    }
+}