1 files changed, 40 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Collections/KeyValuePairs.cs b/src/mscorlib/src/System/Collections/KeyValuePairs.cs
new file mode 100644
index 0000000000..22bf92c456
--- /dev/null
+++ b/src/mscorlib/src/System/Collections/KeyValuePairs.cs
@@ -0,0 +1,40 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*============================================================
+**
+** 
+** 
+**
+**
+** Purpose: KeyValuePairs to display items in collection class under debugger
+**
+**
+===========================================================*/
+
+namespace System.Collections {
+    using System.Diagnostics;
+    
+    [DebuggerDisplay("{value}", Name = "[{key}]", Type = "" )]
+    internal class KeyValuePairs {
+        [DebuggerBrowsable(DebuggerBrowsableState.Never)]
+        private object key;
+
+        [DebuggerBrowsable(DebuggerBrowsableState.Never)]
+        private object value;
+
+        public KeyValuePairs(object key, object value) {
+            this.value = value;
+            this.key = key;
+        }
+
+        public object Key {
+            get { return key; }
+        }
+
+        public object Value {
+            get { return value; }
+        }
+    }    
+}