Azure.Storage.FileStorageAsync.FileExists C# (CSharp) Method

        public bool FileExists(string directoryName, string fileName)
        {
            Validate.String(directoryName, "directoryName");
            Validate.String(fileName, "fileName");

            var rootDirectory = cloudFileShare.GetRootDirectoryReference();
            var directoryToUpdate = rootDirectory.GetDirectoryReference(directoryName);
            var file = directoryToUpdate.GetFileReference(fileName);

            return file.Exists();
        }