title: ZXing.net.mobile scan in landscape orientation
body: <p>I have used the Zxing.Net.Mobile Nuget package... I have made Auto-rotate=false, so that it can scan vertical barcodes. The problem is because it starts scanning in portrait theres no way no scan in landscape and also have orientation locked. I want an option to scan locked in landscape. Here is my code:</p>
  
  <pre><code>               Button scanbutton = FindViewById&lt;Button&gt;(Resource.Id.ScanButton);
          scanbutton.Click += async (sender, e) =&gt;
          {                
                  var result = await _scanner.Scan(new MobileBarcodeScanningOptions
                  {
                      AutoRotate = false,                   
                  });
                  if (result != null)
                  {                   
                      await CallService();
                  }
          };
  </code></pre>