Make ClickOnce Work With ASP.NET Forms Authentication

Partial Public Class _Default
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim _XbapFileName As String = System.Configuration.ConfigurationManager.AppSettings.Item("SiteRoot") & System.Configuration.ConfigurationManager.AppSettings.Item("XbapFileName")
        Response.Redirect(String.Format("{0}?{1}={2}", _XbapFileName, FormsAuthentication.FormsCookieName, FormsAuthentication.Encrypt(CType(Context.User.Identity, FormsIdentity).Ticket)))
    End Sub

End Class