public Attachment(string fileName, ContentType contentType) : base(fileName, contentType)
 {
     if ((contentType.Name == null) || (contentType.Name == string.Empty))
     {
         this.Name = AttachmentBase.ShortNameFromFile(fileName);
     }
     else
     {
         this.Name = contentType.Name;
     }
     base.MimePart.ContentDisposition = new System.Net.Mime.ContentDisposition();
 }
 public Attachment(string fileName, string mediaType) : base(fileName, mediaType)
 {
     this.Name = AttachmentBase.ShortNameFromFile(fileName);
     base.MimePart.ContentDisposition = new System.Net.Mime.ContentDisposition();
 }