title: DataContext does not contain a constructor with 0 parameters
body: <p>I am learning with this so bear with me...I am trying to create the DB object to access the table.</p>
  
  <pre><code>AppDatabaseDataContext appDb = new AppDatabaseDataContext();
  </code></pre>
  
  <p>This gives me an error, so I create the constructor...</p>
  
  <pre><code>public AppDatabaseDataContext()
  {
  
  } 
  </code></pre>
  
  <p>Now this tells me that <code>System.Data.Linq.DataContext</code> does not contain a constructor that takes 0 parameters.   Why?  </p>
  
  <p>Thanks!</p>