public static void Main() { // NOTE: // When used in trial mode, the library imposes some restrictions. // Please visit http://bitmiracle.com/pdf-library/trial-restrictions.aspx // for more information. string pathToFile = "Listboxes.pdf"; using (PdfDocument pdf = new PdfDocument()) { PdfPage page = pdf.Pages[0]; PdfListBox listBox = page.AddListBox(10, 50, 120, 80); listBox.AddItem("First item"); listBox.AddItem("Second item"); listBox.AddItem("Third item"); listBox.MultiSelection = true; PdfListItem[] items = { new PdfListItem("One", "1"), new PdfListItem("Two", "2"), new PdfListItem("Three", "3"), }; PdfListBox listBox2 = page.AddListBox(10, 140, 120, 80); listBox2.AddItems(items); listBox2.SelectItems(new PdfListItem[] { items[0], items[2] }); pdf.Save(pathToFile); } Process.Start(pathToFile); }