Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data/System/Data/DataSysAttribute.cs

@@ -0,0 +1,48 @@
+//------------------------------------------------------------------------------
+// <copyright file="DataSysAttribute.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+// <owner current="true" primary="false">[....]</owner>
+//------------------------------------------------------------------------------
+
+/*
+ */
+namespace System.Data {
+    using System;
+    using System.ComponentModel;
+
+    /// <devdoc>
+    ///    <para>
+    ///       DescriptionAttribute marks a property, event, or extender with a
+    ///       description. Visual designers can display this description when referencing
+    ///       the member.
+    ///    </para>
+    /// </devdoc>
+    [AttributeUsage(AttributeTargets.All)]
+    [ Obsolete("DataSysDescriptionAttribute has been deprecated.  http://go.microsoft.com/fwlink/?linkid=14202", false) ]
+    public class DataSysDescriptionAttribute : DescriptionAttribute {
+
+        private bool replaced = false;
+
+        /// <devdoc>
+        ///     Constructs a new sys description.
+        /// </devdoc>
+        [ Obsolete("DataSysDescriptionAttribute has been deprecated.  http://go.microsoft.com/fwlink/?linkid=14202", false) ]
+        public DataSysDescriptionAttribute(string description) : base(description) {
+        }
+
+        /// <devdoc>
+        ///     Retrieves the description text.
+        /// </devdoc>
+        public override string Description {
+            get {
+                if (!replaced) {
+                    replaced = true;
+                    DescriptionValue = Res.GetString(base.Description);
+                }
+                return base.Description;
+            }
+        }
+    }
+}