title: What does Database.AddInParameter() method do?
body: <p>I was debugging datahandler for an mvc4 application, and I came across the      </p>
  
  <pre><code>AddInParameter(DbCommand, String, DbType);
  </code></pre>
  
  <p>and I looked for the same in MSDN, but there its mentioned as retired content and there is not much documentation. So please anybody help me to understand what it does? </p>