Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,62 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*============================================================
+**
+** Class:  ObsoleteAttribute
+**
+**
+** Purpose: Attribute for functions, etc that will be removed.
+**
+** 
+===========================================================*/
+namespace System {
+    
+    using System;
+    using System.Runtime.Remoting;
+    // This attribute is attached to members that are not to be used any longer.
+    // Message is some human readable explanation of what to use
+    // Error indicates if the compiler should treat usage of such a method as an
+    //   error. (this would be used if the actual implementation of the obsolete 
+    //   method's implementation had changed).
+    // 
+[Serializable]
+[AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Enum |
+        AttributeTargets.Interface | AttributeTargets.Constructor | AttributeTargets.Method| AttributeTargets.Property  | AttributeTargets.Field | AttributeTargets.Event | AttributeTargets.Delegate
+        , Inherited = false)]
+[System.Runtime.InteropServices.ComVisible(true)]
+    public sealed class ObsoleteAttribute : Attribute
+    {
+        private String _message;
+        private bool _error;
+        
+        public ObsoleteAttribute ()
+        {
+            _message = null;
+            _error = false;
+        }
+    
+        public ObsoleteAttribute (String message)
+        {
+            _message = message;
+            _error = false;
+        }
+    
+        public ObsoleteAttribute (String message, bool error)
+        {
+            _message = message;
+            _error = error;
+        }
+    
+        public String Message {
+            get {return _message;}
+        }
+        
+        public bool IsError{
+            get {return _error;}
+        }
+        
+    }
+}