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     // Name, type, and description of list to create.
    private static string lstName = "Customers";
    private static SPListTemplateType lstType = SPListTemplateType.Contacts;
    private static string lstDesc = "A list of customers.";
    
    // Create a list.
    SPListCollection lists = web.Lists;
    Guid listID = lists.Add(lstName, lstDesc, lstType);
    SPList list = lists[listID];
    list.OnQuickLaunch = true;
    list.Update();
    Console.WriteLine("Created {0} list.", list.Title);

 // Apply the new content type to the list.
  list.ContentTypesEnabled = true;
  if (list.IsContentTypeAllowed(ct))
  {
     // Add the new content type.
     SPContentType lstCT = list.ContentTypes.Add(ct);
     // Remove the default content type.
     list.ContentTypes[0].Delete();
     // Commit changes to the list.
     list.Update();
     Console.WriteLine("Applied {0} content type to {1} list.",
                        lstCT.Name, list.Title);
  }
  else
  {
     Console.WriteLine("{0} list does not allow {1} content type.",
                        list.Title, ct.Name);
  }