title: ListBox DataSource how to update (VB.NET)
body: <p>I have an ArrayList with objects, this ArrayList is used as a DataSource to a ListBox. When new objects are added to the listbox, how can i get the listbox to update?</p>
  
  <p>the code for populating the list looks lite this:</p>
  
  <pre><code>'Form1.ExistingArticles = The ArrayList
  'Form1.LB_Articles = The Listbox
  
  Public Sub FillArticleList()
      If Form1.ExistingArticles.Count = 0 Then
          Exit Sub
      End If
  
      Form1.LB_Articles.DataSource = Form1.ExistingArticles
      Form1.LB_Articles.ValueMember = "ID"
      Form1.LB_Articles.DisplayMember = "ListText"
  End Sub
  </code></pre>
  
  <p>When i add a new object to the Form1.ExistinArticles i can see that the new object is there, but it does not update. Calling FillArticleList() again will not work either.</p>