SupportsEventValidationAttribute.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 / SupportsEventValidationAttribute.cs / 1 / SupportsEventValidationAttribute.cs
                        

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

/* 
 */ 
namespace System.Web.UI {
 
    using System;
    using System.Collections;
    using System.ComponentModel;
    using System.Diagnostics; 
    using System.Security.Permissions;
 
    ///  
    /// 
    ///  
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    [AttributeUsage(AttributeTargets.Class, AllowMultiple=false)]
    public sealed class SupportsEventValidationAttribute : Attribute {
 
        private static Hashtable _typesSupportsEventValidation;
 
        static SupportsEventValidationAttribute() { 
            // Create a synchronized wrapper
            _typesSupportsEventValidation = Hashtable.Synchronized(new Hashtable()); 
        }

        public SupportsEventValidationAttribute() {
        } 

        internal static bool SupportsEventValidation(Type type) { 
            object result = _typesSupportsEventValidation[type]; 
            if (result != null) {
                return (bool)result; 
            }

            // Check the attributes on the type to see if it supports SupportsEventValidationAttribute
            // Note that this attribute does not inherit from the base class, since derived classes may 
            // not be able to validate properly.
            object[] attribs = type.GetCustomAttributes(typeof(SupportsEventValidationAttribute), false /* inherits */); 
            bool supportsEventValidation = ((attribs != null) && (attribs.Length > 0)); 
            _typesSupportsEventValidation[type] = supportsEventValidation;
 
            return supportsEventValidation;
        }
    }
}

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