private async Task <Toolkit.Services.OneDrive.OneDriveStorageFile> CreateFileInternalAsync(string desiredName, CreationCollisionOption options = CreationCollisionOption.FailIfExists, IRandomAccessStream content = null, CancellationToken cancellationToken = default(CancellationToken))
{
Stream streamContent = null;
if (string.IsNullOrEmpty(desiredName))
{
throw new ArgumentNullException(nameof(desiredName));
}
if (content == null)
{
// Because OneDrive (Not OneDrive For business) don't allow to create a file with no content
// Put a single byte, then the caller can call Item.WriteAsync() to put the real content in the file
byte[] buffer = new byte[1];
buffer[0] = 0x00;
streamContent = new MemoryStream(buffer);
}
else
{
if (content.Size > Toolkit.Services.OneDrive.OneDriveUploadConstants.SimpleUploadMaxSize)
{
throw new ServiceException(new Error {
Message = "The file size cannot exceed 4MB, use UploadFileAsync instead ", Code = "MaxSizeExceeded", ThrowSite = "UWP Community Toolkit"
});
}
streamContent = content.AsStreamForRead();
}
var childrenRequest = ((IDriveItemRequestBuilder)_oneDriveStorageFolder.RequestBuilder).Children.Request();
string requestUri = $"{childrenRequest.RequestUrl}/{desiredName}/[email protected]={OneDriveHelper.TransformCollisionOptionToConflictBehavior(options.ToString())}";
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Put, requestUri)
{
Content = new StreamContent(streamContent)
};
var createdFile = await((IGraphServiceClient)_service.Provider.GraphProvider).SendAuthenticatedRequestAsync(request, cancellationToken);
return(_oneDriveStorageFolder.InitializeOneDriveStorageFile(createdFile));
}
