public void ReportProgress(double progress, string key, string message)
{
OutputStreamHost.ReportProgress(progress, key, message);
}
/// <summary>
/// Report progress.
/// </summary>
/// <param name="current"></param>
/// <param name="total"></param>
/// <param name="key"></param>
/// <param name="message"></param>
public static void ReportProgress(long current, long total, string key, string message)
{
OutputStreamHost.ReportProgress((double)current / (double)total, key, message);
}