We approached it slightly differently and injected an override on the masterpage to be used dependant on some parameter...

so have Default.aspx inherit from your custom...

{%@ Page language="c#" Codebehind="default.aspx.cs" AutoEventWireup="True" Inherits="NAMESPACE.UmbracoDefault" trace="true" validateRequest="false" %}

        protected override void OnPreInit(EventArgs e)
        {
            base.OnPreInit(e);

            try
            {
                if (String.IsNullOrEmpty(GetCurrentAltTemplateAlias()))
                {
                    // using the admin specified template
                    Node currentNode = Node.GetCurrent();
                    umbraco.template template = new umbraco.template(currentNode.template);

                    // we're using the mobileesp.org to detect mobile/tablet items.

                        if (DetectTierTablet())
                        {
                            try
                            {
                                if (umbraco.cms.businesslogic.template.Template.GetByAlias(template.TemplateAlias + "Tablet") != null)
                                {
                                    Page.MasterPageFile = Page.MasterPageFile.Replace(".master", "Tablet.master");
                                }
                            }
                            catch { }
                        }
                        else if (DetectMobileLong())
                        {
                            try
                            {
                                if (umbraco.cms.businesslogic.template.Template.GetByAlias(template.TemplateAlias + "Mobile") != null)
                                {
                                    Page.MasterPageFile = Page.MasterPageFile.Replace(".master", "Mobile.master");
                                }
                            }
                            catch { }
                        }

                }
                else
                {

                    // already using an alternative tempalte
                    //Response.Write(GetCurrentAltTemplateAlias() + "");
                }
            }
            catch { }
        }


        public static string GetCurrentAltTemplateAlias()
        {
            return (System.Web.HttpContext.Current.Items["altTemplate"] ?? "").ToString();
        }

    }
}

Thank you very much for your help.

Hi

I tried to implement the solution suggested above by Mike.

But somehow  it is giving the below error:

Master template is the same as the current template. It would cause an endless loop! Make sure that the current template ''Template with id: '-1' has another Master Template than itself. You can change this in the template editor under 'Settings'

Also.. if i do a...

Response.Write(umbraco.cms.businesslogic.template.Template.GetByAlias(template.TemplateAlias + "Mobile"));

It gives..

{ Id: 3317, Text: HomePage TemplateMobile, ParentId: -1 }

The ParentId -1 seems to cause the issue.

Any idea what is going wrong?

Any help will be appreciated

Thanks

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