¿Cómo cambiar dinámicamente la página principal de la página principal?

Question

He diseñado un módulo que cambia la página maestra dinámicamente basada en los privilegios de inicio de sesión de usuarios.

Seguí este tutorial:

http://ranaictiu-technicalblog.blogspot.it/2009/10/sharepoint-dynamy-change-master.html?showcomment=1354630820782#C5132604142640789136

Todo funciona bien.Pero solo funciona en la página de inicio de SharePoint.Si intenta ir a otra página como

_layouts / user.aspx

o

/ _ Diseños / Closeconnection.aspx

¡Entonces la página se bloquearía!

public class DynamicMasterPageModule : IHttpModule
{
    public void Dispose()
    {


    }


    public void Init(HttpApplication context)
    {
        context.PreRequestHandlerExecute += new EventHandler(context_PreRequestHandlerExecute);
    }


    void context_PreRequestHandlerExecute(object sender, EventArgs e)
    {
        Page page = HttpContext.Current.CurrentHandler as Page;
        if (page != null)
        {
            page.PreInit += new EventHandler(page_PreInit);
        }
    }
void page_PreInit(object sender, EventArgs e)
    {
        Page page = sender as Page;
        string pageNo = ConfigurationManager.AppSettings["MasterPageNo"];




        if (page != null)
        {
            if (pageNo.Equals("1"))
            {
                page.MasterPageFile = "~masterurl/custom.master";
                if (SPContext.Current != null)
                {
                    SPContext.Current.Web.CustomMasterUrl = "/_catalogs/masterpage/custom1.master";
                }
            }
            else if (pageNo.Equals("2"))
            {
                page.MasterPageFile = "~masterurl/custom.master";
                if (SPContext.Current != null)
                {
                    SPContext.Current.Web.CustomMasterUrl = "/_catalogs/masterpage/custom2.master";
                }


            }
            else
            {
                page.MasterPageFile = "~masterurl/default.master";
                if (SPContext.Current != null)
                {
                    SPContext.Current.Web.MasterUrl = "/_catalogs/masterpage/default.master";
                }
            }


        }

Error:

The file '/_layouts/masterurl/custom.master' does not exist. 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Web.HttpException: The file '/_layouts/masterurl/custom.master' does not exist.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 


[HttpException (0x80004005): The file '/_layouts/masterurl/custom.master' does not exist.]
   System.Web.UI.Util.CheckVirtualFileExists(VirtualPath virtualPath) +11108402
   System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +163
   System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +116
   System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, IDictionary contentTemplateCollection) +175
   System.Web.UI.Page.get_Master() +69
   System.Web.UI.Page.ApplyMasterPage() +18
   System.Web.UI.Page.PerformPreInit() +58
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1256

Answer 1

En seguimiento a mi comentario, el código es, de hecho, la búsqueda, posiblemente no es de referenciar la página maestra correctamente.

El código debe parecer más así:

string masterUrl = site.ServerRelativeUrl;

if (!masterUrl.EndsWith(@"/"))
{
    masterUrl = masterUrl + @"/";
}

SPFile file = web.GetFile(masterUrl + "_catalogs/masterpage/custom.master");

Esto le dará la URL relativa basada en el permiso correcta para la página maestra.