/// <summary>
/// Retrieves a StorageFile from a given StorageFolderLocation with a given file name. Optional parameter to create the file if it doesn't exist.
/// </summary>
/// <param name="location">
/// The StorageFolderLocation.
/// </param>
/// <param name="fileName">
/// The file name.
/// </param>
/// <param name="createIfNotExists">
/// Whether to create the file if it doesn't exist.
/// </param>
/// <returns>
/// Returns the StorageFile, if exists.
/// </returns>
public async Task<StorageFile> RetrieveStorageFileAsync(StorageFolderLocation location, string fileName, bool createIfNotExists)
{
if (string.IsNullOrWhiteSpace(fileName))
{
throw new ArgumentNullException(nameof(fileName));
}
var folder = await this.RetrieveStorageFolderAsync(location);
var file = await GetFileAsync(folder, fileName);
if (file != null || !createIfNotExists)
{
return file;
}
file = await folder.CreateFileAsync(fileName, CreationCollisionOption.OpenIfExists);
return file;
}
/// <summary>
/// Retrieves a StorageFolder for a given StorageFolderLocation.
/// </summary>
/// <param name="location">
/// The StorageFolderLocation to find.
/// </param>
/// <returns>
/// Returns the StorageFolder.
/// </returns>
public async Task<StorageFolder> RetrieveStorageFolderAsync(StorageFolderLocation location)
{
var folder = ApplicationData.Current.LocalFolder;
switch (location)
{
case StorageFolderLocation.Root:
break;
case StorageFolderLocation.User:
folder = await folder.CreateFolderAsync(UserStorageFolderName, CreationCollisionOption.OpenIfExists);
break;
case StorageFolderLocation.Logs:
folder = await folder.CreateFolderAsync(LogsStorageFolderName, CreationCollisionOption.OpenIfExists);
break;
case StorageFolderLocation.Temp:
folder = ApplicationData.Current.TemporaryFolder;
break;
}
return folder;
}
