How to rotate the PDF Document when it is viewed in PDF Viewer Control?

We do not support document rotation when it is viewed in PDF Viewer Control. However as a workaround we can achieve this by assigning the rotation value in document settings for rotation in PDF document using PdfPageRotateAngle.

Code Snippet:

PdfDocument doc = new PdfDocument();

if (doc.PageSettings.Rotate == PdfPageRotateAngle.RotateAngle0)

doc.PageSettings.Rotate = PdfPageRotateAngle.RotateAngle90;

else if (doc.PageSettings.Rotate == PdfPageRotateAngle.RotateAngle90)

doc.PageSettings.Rotate = PdfPageRotateAngle.RotateAngle180;

else if (doc.PageSettings.Rotate == PdfPageRotateAngle.RotateAngle180)

doc.PageSettings.Rotate = PdfPageRotateAngle.RotateAngle270;

else if (doc.PageSettings.Rotate == PdfPageRotateAngle.RotateAngle270)

doc.PageSettings.Rotate = PdfPageRotateAngle.RotateAngle0;

rotation = doc.PageSettings.Rotate;

MemoryStream ms = new MemoryStream();

doc.Save(ms);

byte[] buffer = new byte[ms.Length];

ms.Read(buffer, 0, buffer.Length);

PdfLoadedDocument ldocument = new PdfLoadedDocument(ms);

pdfViewer.LoadDocument(ldocument);

ldocument.Close(true);

ms.Dispose();

doc.Close(true);

Please find the sample attached in the below link:

https://www.syncfusion.com/downloads/support/forum/119414/ze/RotationWinRT-574447116

Note:

Starting with v16.2.0.x, if you reference Syncfusion® assemblies from the trial setup or the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion® license key in your application to use the components without a trial message.

Conclusion:

I hope you enjoyed learning about how to rotate the PDF Document when it is viewed in PDF Viewer Control.

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