title: Create a List of int & DateTime
body: <p>I want to create a List like this :</p>
  
  <pre><code>List&lt;int, DateTime&gt; foo = new List&lt;int, DateTime&gt;();
  </code></pre>
  
  <p>but I get this error :</p>
  
  <p><code>Using the generic type 'System.Collections.Generic.List&lt;T&gt;' requires 1 type arguments</code></p>
  
  <p>Is it possible to do that in C# ?</p>