C# itext7匯出PDF，自動旋轉文件方向

c# itext7 addxobeject 旋轉矩陣

mickhsiao 2024-04-03 09:29:45 ‧ 863 瀏覽

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嘗試用itext7做PDF文件整合工作，縮放文件後匯出檔案，某些頁面會自動向右旋轉90度
以下為程式碼

PdfPage page = pdfDocument.GetPage(i);
                    PdfFormXObject formXObject = page.CopyAsFormXObject(outPDfDoc);
                    Single xPercent = PageSize.B5.GetWidth() / page.GetPageSize().GetWidth();
                    Single yPercent = PageSize.B5.GetHeight() / page.GetPageSize().GetHeight();
                    PdfCanvas pdfCanvas = new PdfCanvas(outPDfDoc.AddNewPage());
                    pdfCanvas.AddXObjectWithTransformationMatrix(formXObject, xPercent, 0, 0, yPercent, 0, 0);

想請問如何避免此情況