private void FitHeight() { if (_pdfDoc != null && _pdfDoc.CurrentPage > 0) { using (PictureBox p = new PictureBox()) { p.Width = pageViewControl1.ClientSize.Height; _pdfDoc.FitToHeight(p.Handle); } _pdfDoc.RenderFinished -= new RenderFinishedHandler(_pdfDoc_RenderFinished); _pdfDoc.RenderFinished += new RenderFinishedHandler(_pdfDoc_RenderFinished); _pdfDoc.RenderPageThread(pageViewControl1.Handle, false); } }