Come modificare dinamicamente la Pagina principale della Pagina principale?

Question

Ho progettato un modulo che cambia la pagina master in base alla Dinamicamente sui privilegi di accesso utente.

Ho seguito questo tutorial:

http://ranaictiu-technicalblog.blogspot.it/2009/10/sharepoint-dynamically-change-master.html?comment=135463082078264078604142640789136

Tutto funziona bene.Ma funziona solo sulla home page di SharePoint.Se prova ad andare in un'altra pagina come

.

_Layouts / user.aspx

o

.

/ _ Layouts / closeconnection.aspx

Quindi la pagina si schianta!

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";
                }
            }


        }

.

Errore:

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

In seguito al mio commento, il codice è effettivamente la ricerca del genere che non si fa riferimento correttamente alla pagina master.

Il codice dovrebbe essere più simile a questo:

string masterUrl = site.ServerRelativeUrl;

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

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

.

Questo darà il corretto URL relativo basato su autorizzazione per la Pagina principale.