CSharp___DllImport.Phone.Search.BindSearchButtonToPage C# (CSharp) Метод

            public static int BindSearchButtonToPage(string pageurl)
            {
                if (pageurl == null) throw new ArgumentNullException("pageurl");
                if (!pageurl.EndsWith(".xaml")) throw new ArgumentException("pageurl does not end with \".xaml\". Try \"MyPages/[Page].xaml\"");

                if (bindedPage != null)
                {
                    UnBindSearchableButtonToPage();
                }

                bindedPage = pageurl;
                var val = DllImportCaller.lib.StringCall("IAFapi", "RegisterSearchablePage", pageurl);

                return val;
            }