Working with Page Rotation

PdfPageEditor class provides the facility to rotate a page.

Rotate page using PageRotations

To rotate pages in document we can use PageRotations. PageRotations contains the page number and rotation degree, the key represents the page number, the value of key represents the rotation in degrees.

 // For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
 private static void RotatePages1()
 {
    // The path to the documents directory
     var dataDir = RunExamples.GetDataDir_AsposePdf();

     using (var editor = new Aspose.Pdf.Facades.PdfPageEditor())
     {
         // Bind PDF document
         editor.BindPdf(dataDir + "sample.pdf");

         // Specify the page rotation dictionary
         editor.PageRotations = new System.Collections.Generic.Dictionary<int, int>
         {
             { 1, 90 },
             { 2, 180 },
             { 3, 270 }
         };

         // Save PDF document
         editor.Save(dataDir + "sample-rotate-a.pdf");
     }
 }

Rotate page using Rotation

We can also use Rotation propety. The rotation must be 0, 90, 180 or 270

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void RotatePages2()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf();

    using (var editor = new Aspose.Pdf.Facades.PdfPageEditor())
    {
        // Bind PDF document
        editor.BindPdf(dataDir + "sample.pdf");

        // Specify the pages to rotate and the rotation angle
        editor.ProcessPages = new int[] { 1, 3 };
        editor.Rotation = 90;

        // Save PDF document
        editor.Save(dataDir + "sample-rotate-a.pdf");
    }
}