System.Web.Security.FormsAuthentication.GetRedirectUrl C# (CSharp) Method

		public static string GetRedirectUrl (string userName, bool createPersistentCookie)
		{
			if (userName == null)
				return null;

			Initialize ();
			HttpRequest request = HttpContext.Current.Request;
			string returnUrl = ReturnUrl;
			if (returnUrl != null)
				return returnUrl;

			returnUrl = request.ApplicationPath;
			string apppath = request.PhysicalApplicationPath;
			bool found = false;

			foreach (string indexFile in indexFiles) {
				string filePath = Path.Combine (apppath, indexFile);
				if (File.Exists (filePath)) {
					returnUrl = UrlUtils.Combine (returnUrl, indexFile);
					found = true;
					break;
				}
			}

			if (!found)
				returnUrl = UrlUtils.Combine (returnUrl, "index.aspx");

			return returnUrl;
		}