title: How to inject IOrchardServices to Handler in Orchard CMS
body: <p>I want to inject <code>IOrchardServices</code> into <code>Handler</code> because of i need some service in handler,so in my handler i wrote this:</p>
  
  <pre><code>public class EstatePartHandler : ContentHandler
  {
      private readonly IOrchardServices Services;
      public EstatePartHandler(IOrchardServices services)
      {
          Services = services;
      }
  ...
  }
  </code></pre>
  
  <p>But <code>Orchard</code> throws an exception on construction the handler:</p>
  
  <pre><code>Cannot choose between multiple constructors with equal length 1 on type 'Estate.Handlers.EstatePartHandler'. Select the constructor explicitly, with the UsingConstructor() configuration method, when the component is registered.
  </code></pre>
  
  <p>what is wrong?</p>