/// <summary>
/// Adds a file to the error collection of the status when
/// the form stream indicates that a file has completed in error.
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="fileName">File name</param>
/// <param name="identifier">Container identifier.</param>
/// <param name="ex">The exception that was raised.</param>
void fs_FileCompletedError(object sender, string fileName, object identifier, Exception ex)
{
_status.ErrorFiles.Add(new UploadedFile(fileName, identifier, _processor.GetHeaderItems(), ex));
}