Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/mscorlib/system/nonserializedattribute.cs

@@ -0,0 +1,38 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*============================================================
+**
+** Class: NonSerializedAttribute
+**
+**
+** Purpose: Used to mark a member as being not-serialized
+**
+**
+============================================================*/
+namespace System 
+{
+    using System.Reflection;
+
+    [AttributeUsage(AttributeTargets.Field, Inherited=false)]
+    [System.Runtime.InteropServices.ComVisible(true)]
+    public sealed class NonSerializedAttribute : Attribute 
+    {
+        internal static Attribute GetCustomAttribute(RuntimeFieldInfo field) 
+        { 
+            if ((field.Attributes & FieldAttributes.NotSerialized) == 0)
+                return null;
+
+            return new NonSerializedAttribute();
+        }
+
+        internal static bool IsDefined(RuntimeFieldInfo field) 
+        { 
+            return (field.Attributes & FieldAttributes.NotSerialized) != 0;
+        }
+
+        public NonSerializedAttribute() { }
+    }
+}