/// <summary>
 /// method for opening the view for the editing article
 /// </summary>
 private void EditArticleExecute()
 {
     try
     {
         EditArticleView editUser = new EditArticleView(Article);
         editUser.ShowDialog();
         if ((editUser.DataContext as EditArticleViewModel).IsUpdateArticle == true)
         {
             ListOfArticles = GetAllArticles().ToList();
         }
     }
     catch (Exception ex)
     {
         System.Diagnostics.Debug.WriteLine("Exception" + ex.Message.ToString());
     }
 }
 // constructor
 public EditArticleViewModel(EditArticleView editArticleOpen, tblArticle tblArticle)
 {
     article     = tblArticle;
     editArticle = editArticleOpen;
 }