title: Webview 2 .NET (Windows Forms) NullReferenceException
body: <p>Microsoft has finally released a pre-release of Webview2 for .NET. I followed the steps, but I keep getting a NullReferenceException on loading the form. How can I fix this?</p>
  <pre class="lang-none prettyprint-override"><code>System.InvalidOperationException: 'An error occurred creating the form. See Exception.InnerException
  for details.  The error is: Object reference not set to an instance of an object.'
  
  NullReferenceException: Object reference not set to an instance of an object.
  
  This exception was originally thrown at this call stack:
  Microsoft.Web.WebView2.WinForms.WebView2.OnVisibleChanged(System.EventArgs)
    System.Windows.Forms.Control.AssignParent(System.Windows.Forms.Control)
    System.Windows.Forms.Control.ControlCollection.Add(System.Windows.Forms.Control)
    System.Windows.Forms.Form.ControlCollection.Add(System.Windows.Forms.Control)
    Repair_VIP.Form_test.InitializeComponent() in Form_test.Designer.vb
  </code></pre>