title: C# Project has auto generated classes, but what auto generated them?
body: <p>I am working on a project that I was the original developer on, but over the last couple of years two other developers have maintained and upgraded the project. </p>
  
  <p>There are now some class files inside with the following at the top: </p>
  
  <pre><code>//------------------------------------------------------------------------------
  // &lt;auto-generated&gt;
  //     This code was generated by a tool.
  //     Runtime Version:2.0.50727.1433
  //
  //     Changes to this file may cause incorrect behavior and will be lost if
  //     the code is regenerated.
  // &lt;/auto-generated&gt;
  //------------------------------------------------------------------------------
  
  using System.Xml.Serialization;
  
  // 
  // This source code was auto-generated by xsd, Version=2.0.50727.1432.
  // 
  </code></pre>
  
  <p>Any idea what could have generated these files? There are some issues inside one of them I want to clean up, but it says the changes might be overwritten. </p>