AccessRequest Event Reciever

accreqER.cs

using System;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Security;
using Microsoft.SharePoint.Administration;

namespace AccessRequest.Features.AccessRequestFeature
{
    [Guid("c7482d83-8a04-4aa0-95e6-bf629805ecb1")]
    public class CSXAccessRequestFeatureEventReceiver : SPFeatureReceiver
    {
        const string customRequestAccessPage = "/_layouts/AccessRequest/ReqAcc.aspx";

        public override void FeatureActivated(SPFeatureReceiverProperties properties)
        {
            SPSecurity.RunWithElevatedPrivileges(delegate()
            {
                SPWebApplication webApp = properties.Feature.Parent as SPWebApplication;
                if (null != webApp)
                {
                    if (webApp.UpdateMappedPage(SPWebApplication.SPCustomPage.RequestAccess, customRequestAccessPage))
                    {
                        webApp.Update();
                    }
                }
            });
        }

        public override void FeatureDeactivating(SPFeatureReceiverProperties properties)
        {
            SPWebApplication webApp = properties.Feature.Parent as SPWebApplication;
            if (null != webApp)
            {
                if (webApp.UpdateMappedPage(SPWebApplication.SPCustomPage.RequestAccess, null))
                {
                    webApp.Update();
                }
            }
        }

    }
}