title: Adding namespaces to Visual Studio project
body: <p>I am creating a Visual Studio solution and am trying to add namespaces Kafka.Client, Kafka.Client.Producers.Parititioning, Kafka.Client.IntegrationTests, etc. to a program file I've created with a Main() method.  I have Kafka.Client and <code>Kafka.Client.IntegrationTests</code> in the References of this program file as per Solution Explorer.  The code is as follows:</p>
  
  <pre><code>using Kafka.Client;
  using Kafka.Client.IntegrationTests;
  using Kafka.Client.Producers.Partitioning;
  using Kafka.Client.Utils;
  using Kafka.Client.ZooKeeperIntegration;
  
  namespace ConsoleApplication2 {
      class Program {
          static void Main(string[] args) {
          //code here
          }
      }
  }
  </code></pre>
  
  <p>The problem is that when I try to "Rebuild solution" or "debug solution", the aforementioned "using" lines give the error "The type or namespace name 'Kafka' could not be found (are you missing a using directive or an assembly reference?)"  I've spent quite a long time on this and would appreciate some pointers about what I would need to do.</p>