PDFRasterizer.NET 4.0 is now available. Supports .NET Core. Renders pixel-perfectly.
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Rotate a PDF page
This code sample creates a copy of a PDF document with each page rotated 90 degrees. Note that you can rotate each page to a custom angle.
using (FileStream inFile = new FileStream(@"..\..\..\inputDocuments\PackingLightBrochure.pdf", FileMode.Open, FileAccess.Read))
{
// open the source document
Document documentIn = new Document(inFile);
// create the target document
Document documentOut = new Document();
// enumerate the pages in the source document
foreach (Page inputPage in documentIn.Pages)
{
// append a rotated version of the original page to the target document
// create a new page that has the width and height swapped
Page page = new Page(inputPage.Height, inputPage.Width);
// because the pageShape rotates clockwise with the rotation point at the lower left
// corner, we must apply a translation in order to get the page in view again
PageShape pageShape = new PageShape(inputPage, 0, inputPage.Width, inputPage.Width, inputPage.Height, true, 90, PageBoundary.Default);
page.VisualOverlay.Add(pageShape);
documentOut.Pages.Add(page);
}
// write the target document to disk
using (FileStream outFile = new FileStream(@"..\..\rotatepage.pdf", FileMode.Create, FileAccess.Write))
{
documentOut.Write(outFile);
}
Using inFile As New FileStream("..\..\..\inputDocuments\PackingLightBrochure.pdf", FileMode.Open, FileAccess.Read)
' open the source document
Dim documentIn As New Document(New BinaryReader(inFile))
' create the target document
Dim documentOut As New Document()
For i As Integer = 0 To documentIn.Pages.Count - 1
' enumerate the pages in the source document
' append a rotated version of thew original page to the target document
' create a new page that has the width and height swapped
Dim page As New Page(documentIn.Pages(i).Height, documentIn.Pages(i).Width)
' because the pageShape rotates clockwise with the rotation point at the lower left
' corner, we must apply a translation in order to get the page in view again
Dim pageShape As New PageShape(documentIn.Pages(i), 0, page.Height, page.Height, page.Width, True, _
90, PageBoundary.[Default])
page.VisualOverlay.Add(pageShape)
documentOut.Pages.Add(page)
Next
' write the target document to disk
Using outFile As New FileStream("..\..\rotatepage.pdf", FileMode.Create, FileAccess.Write)
documentOut.Write(New BinaryWriter(outFile))
End Using
End Using

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