title: Update Service Reference is not working in WCF
body: <p>I am using VS 2012. </p>
  
  <p>I add services reference to my WPF project, but when I've changed my services and updated service reference my Reference.svcmap -> Reference.CS file will be blank and I can't use reference anymore. I can see it in project, but I can't use. </p>
  
  <p>My settings of Services References are :-
  <img src="https://i.stack.imgur.com/63Hcv.jpg" alt="enter image description here"></p>
  
  <p>Reference.cs file </p>
  
  <pre><code>//------------------------------------------------------------------------------
  // &lt;auto-generated&gt;
  //     This code was generated by a tool.
  //     Runtime Version:4.0.30319.17929
  //
  //     Changes to this file may cause incorrect behavior and will be lost if
  //     the code is regenerated.
  // &lt;/auto-generated&gt;
  //------------------------------------------------------------------------------
  </code></pre>