UrlAttribute.cs

using System.Runtime.InteropServices;
using System.Runtime.Remoting.Contexts;
using System.Security;

namespace System.Runtime.Remoting.Activation
{
    [Serializable]
    [SecurityCritical]
    [ComVisible(true)]
    public sealed class UrlAttribute : ContextAttribute
    {
        private string url;

        private static string propertyName = "UrlAttribute";

        public string UrlValue
        {
            [SecurityCritical]
            get
            {
                return url;
            }
        }

        [SecurityCritical]
        public UrlAttribute(string callsiteURL)
            : base(propertyName)
        {
            if (callsiteURL == null)
            {
                throw new ArgumentNullException("callsiteURL");
            }
            url = callsiteURL;
        }

        [SecuritySafeCritical]
        public override bool Equals(object o)
        {
            if (o is IContextProperty && o is UrlAttribute)
            {
                return ((UrlAttribute)o).UrlValue.Equals(url);
            }
            return false;
        }

        [SecuritySafeCritical]
        public override int GetHashCode()
        {
            return url.GetHashCode();
        }

        [SecurityCritical]
        [ComVisible(true)]
        public override bool IsContextOK(Context ctx, IConstructionCallMessage msg)
        {
            return false;
        }

        [SecurityCritical]
        [ComVisible(true)]
        public override void GetPropertiesForNewContext(IConstructionCallMessage ctorMsg)
        {
        }
    }
}