using System; using System.IO; using System.Threading.Tasks; namespace Xamarin.Forms { internal interface IIsolatedStorageFile { Task CreateDirectoryAsync(string path); Task GetDirectoryExistsAsync(string path); Task GetFileExistsAsync(string path); Task GetLastWriteTimeAsync(string path); Task OpenFileAsync(string path, FileMode mode, FileAccess access); Task OpenFileAsync(string path, FileMode mode, FileAccess access, FileShare share); } }