title: Connection string using Windows Authentication
body: <p>I am creating a website, but in the database I use windows authentication.</p>
  
  <p>I know that you use this for SQL authentication</p>
  
  <pre><code>&lt;connectionStrings&gt; 
      &lt;add name="NorthwindContex" 
         connectionString="data source=localhost;
         initial catalog=northwind;persist security info=True; 
         user id=sa;password=P@ssw0rd" 
         providerName="System.Data.SqlClient" /&gt; 
  &lt;/connectionStrings&gt;
  </code></pre>
  
  <p>How do I modify this to work with windows authentication?</p>