protected override void Dispose(bool disposing)
 {
     if (disposing)
     {
         _db.Dispose();
     }
     base.Dispose(disposing);
 }
 protected virtual void Dispose(bool disposing)
 {
     if (!this._disposed)
     {
         if (disposing)
         {
             Context.Dispose();
         }
     }
     this._disposed = false;
 }