title: NullReferenceException when adding to ArrayList
body: <p>I am attempting to add to an ArrayList using the following.</p>
  
  <pre><code>Dim lines() As String = IO.File.ReadAllLines("C:\xTools\messages.txt")
  For Each line As String In lines
    Dim parts As String() = line.Split(New String() {":"}, StringSplitOptions.None)
    Dim message As String = String.Join(" ", parts)
    If Not message = Nothing Then
      Messages.Add(message)
    End If
  Next
  </code></pre>
  
  <p>All I get is NullReferenceExceptions on <code>Messages.Add(message)</code>. Please advise.</p>