title: list of integer to comma delimited string
body: <p>I have tried this several ways and keep getting an error each time I try.</p>
  
  <p>This is using .net 3.5 with asp.net(forms) and vb.net.</p>
  
  <p>Examples:</p>
  
  <pre><code>Dim _registrations = New List(Of Integer)
  
  Dim regList As String
  
  Dim ListOfReg = _registrations.convertall(Of String)(Function(i As Integer) i.ToString())
  
  regList = String.Join(",", ListOfReg.ToArray())
  </code></pre>
  
  <p><strong>Error message:</strong></p>
  
  <p><code>Overload resolution failed because no Public 'convertall' can be called with these arguments:
     'Public Function ConvertAll(Of String)(converter As System.Converter(Of Integer,String)) As System.Collections.Generic.List(Of String)':
         Argument matching parameter 'converter' cannot convert from 'VB$AnonymousDelegate_0(Of Integer,String)' to 'Converter(Of Integer,String)'.</code></p>
  
  <p>Other attempt:</p>
  
  <pre><code>regList = String.Join(",", (_registrations.Select(Function(reg) reg.ToString()).ToArray()))
  </code></pre>
  
  <p><strong>Error message:</strong></p>
  
  <p><code>Public member 'Select' on type 'List(Of Integer)' not found.</code></p>
  
  <p>Any help is appreciated.</p>
  
  <p>Thanks.</p>