Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web.Mobile/UI/MobileControls/MobileUserControl.cs

@@ -0,0 +1,54 @@
+//------------------------------------------------------------------------------
+// <copyright file="MobileUserControl.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+using System.ComponentModel;
+using System.ComponentModel.Design;
+using System.Diagnostics;
+using System.Web.UI;
+using System.Security.Permissions;
+
+namespace System.Web.UI.MobileControls
+{
+    /// <include file='doc\MobileUserControl.uex' path='docs/doc[@for="MobileUserControl"]/*' />
+    [
+        Designer("Microsoft.VisualStudio.Web.WebForms.MobileWebFormDesigner, " + AssemblyRef.MicrosoftVisualStudioWeb, typeof(IRootDesigner)),
+        Designer(typeof(System.Web.UI.Design.MobileControls.MobileUserControlDesigner))
+    ]
+    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
+    [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
+    [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
+    public class MobileUserControl : UserControl
+    {
+        /// <include file='doc\MobileUserControl.uex' path='docs/doc[@for="MobileUserControl.AddParsedSubObject"]/*' />
+        protected override void AddParsedSubObject(Object o)
+        {
+            // Note : AddParsedSubObject is never called at DesignTime
+            if (o is StyleSheet)
+            {
+                if (_styleSheet != null)
+                {
+                    throw new
+                        Exception(SR.GetString(SR.StyleSheet_DuplicateWarningMessage));
+                }
+                else
+                {
+                    _styleSheet = (StyleSheet)o;
+                }
+            }
+
+            base.AddParsedSubObject(o);
+        }
+
+        private StyleSheet _styleSheet = null;
+        internal StyleSheet StyleSheet
+        {
+            get
+            {
+                return (_styleSheet != null) ? _styleSheet : StyleSheet.Default;
+            }
+        }
+    }
+}