title: Cannot implicitly convert from dialog result to bool
body: <p>I'm trying to reproduce code from wpf to winforms (this code works inside wpf)</p>
  
  <pre><code>public static bool? ShowSettingsDialogFor(ICustomCustomer)
  {
     if (cust is BasicCustomer)
     {
        return (new BCustomerSettingsDialog()).ShowDialog();
     }
  }
  </code></pre>
  
  <p>I'm getting compile error message</p>
  
  <blockquote>
    <p>Cannot implicitly convert type 'System.Windows.Forms.DialogResult' to
    'bool?'</p>
  </blockquote>