void UploadSpeedChanged(object sender, UploadSpeedEventArgs e)
{
StatusMessage = String.Format("Uploading ({0}ps)", UploaderViewModel.SizeFormatter(e.Speed));
OnPropertyChanged(new PropertyChangedEventArgs("StatusMessage"));
}
internal void OnUploadSpeedChanged(UploadSpeedEventArgs e)
{
var evt = SpeedChanged;
if (evt != null) evt(this, e);
}