Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/misc/InvariantComparer.cs

@@ -0,0 +1,25 @@
+namespace System {
+    using System;
+    using System.Collections;
+    using System.Globalization;
+ 
+    [Serializable]
+    internal class InvariantComparer : IComparer {
+        private CompareInfo m_compareInfo;
+        internal static readonly InvariantComparer Default = new InvariantComparer();
+        
+        internal InvariantComparer() {
+            m_compareInfo = CultureInfo.InvariantCulture.CompareInfo;
+        }
+  
+        public int Compare(Object a, Object b) {
+            String sa = a as String;
+            String sb = b as String;
+            if (sa != null && sb != null)
+                return m_compareInfo.Compare(sa, sb);
+            else
+                return Comparer.Default.Compare(a,b);
+        }
+    }
+}
+