ViewStateModeByIdAttribute.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / ViewStateModeByIdAttribute.cs / 1 / ViewStateModeByIdAttribute.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 */ 
namespace System.Web.UI {
    using System; 
    using System.Collections;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Security.Permissions; 

    [AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)] 
    [AttributeUsage(AttributeTargets.Class)] 
    public sealed class ViewStateModeByIdAttribute : Attribute {
        static Hashtable _viewStateIdTypes = Hashtable.Synchronized(new Hashtable()); 

        public ViewStateModeByIdAttribute() {
        }
 
        internal static bool IsEnabled(Type type) {
            if (!_viewStateIdTypes.ContainsKey(type)) { 
                System.ComponentModel.AttributeCollection attrs = TypeDescriptor.GetAttributes(type); 
                ViewStateModeByIdAttribute attr = (ViewStateModeByIdAttribute)attrs[typeof(ViewStateModeByIdAttribute)];
                _viewStateIdTypes[type] = (attr != null); 
            }
            return (bool)_viewStateIdTypes[type];
        }
    } 
}

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