gistfile1.cs

        private const string BaseFilePath = "JsonSerialization/json/";
        public async static Task<string> DirectorySearchJson()
        {
            
            return await ReadFile(BaseFilePath + "DirectorySearchResults.json.txt");
        }
        
        private async static Task<string> ReadFile(string fileName)
        {
            var jsonFile = Path.Combine(Package.Current.InstalledLocation.Path, fileName);
 
            var jsonFolder = await StorageFolder.GetFolderFromPathAsync(Path.GetDirectoryName(jsonFile));
 
            using (var jsonStream = await jsonFolder.OpenStreamForReadAsync(Path.GetFileName(jsonFile)))
            {
                using (var streamReader = new StreamReader(jsonStream))
                {
                    var json = streamReader.ReadToEnd();
                    return json;
                }
            }
        }