/// <summary>
 /// Meta method to create a text preview
 /// </summary>
 public void CreateText()
 {
     ValidGenericText = Preview.CreateText(Stream, out genericText, out errorMessage);
     initialized      = true;
 }
 /// <summary>
 /// Meta method to create an image preview
 /// </summary>
 public void CreateImage()
 {
     ValidImage  = Preview.CreateImage(FileExtension, Stream, ShowGenericText, out image, out errorMessage, out genericText);
     initialized = true;
 }