Create ComboBox in PDF form - C#
PDF SDK sample in C# demonstrating ‘Create ComboBox in PDF form’
Program.cs
using System.Diagnostics;
using Bytescout.PDF;
namespace ComboBoxes
{
/// <summary>
/// This example demonstrates how to create and decorate comboboxes.
/// </summary>
class Program
{
static void Main()
{
// Create new document
Document pdfDocument = new Document();
pdfDocument.RegistrationName = "demo";
pdfDocument.RegistrationKey = "demo";
// If you wish to load an existing document uncomment the line below and comment the Add page section instead
// pdfDocument.Load(@".\existing_document.pdf");
// Add page
Page page = new Page(PaperFormat.A4);
pdfDocument.Pages.Add(page);
// Add dropdown box (not editable combobox)
ComboBox comboBox1 = new ComboBox(20, 20, 150, 25, "comboBox1");
comboBox1.Font.Size = 12;
comboBox1.BorderColor = new ColorRGB(0, 0, 128);
comboBox1.BackgroundColor = new ColorRGB(220, 220, 255);
comboBox1.BorderWidth = 2;
comboBox1.Text = "Select item";
comboBox1.Items.Add("Item 1");
comboBox1.Items.Add("Item 2");
comboBox1.Items.Add("Item 3");
page.Annotations.Add(comboBox1);
// Add editable combobox
ComboBox comboBox2 = new ComboBox(20, 50, 150, 25, "comboBox2");
comboBox2.Editable = true;
comboBox2.Font.Size = 12;
comboBox2.BorderColor = new ColorRGB(0, 128, 0);
comboBox2.BackgroundColor = new ColorRGB(220, 255, 220);
comboBox1.BorderWidth = 2;
comboBox2.Text = "Editable ComboBox";
comboBox2.Items.Add("Item 1");
comboBox2.Items.Add("Item 2");
comboBox2.Items.Add("Item 3");
page.Annotations.Add(comboBox2);
// Save document to file
pdfDocument.Save("result.pdf");
// Cleanup
pdfDocument.Dispose();
// Open result document in default associated application (for demo purpose)
ProcessStartInfo processStartInfo = new ProcessStartInfo("result.pdf");
processStartInfo.UseShellExecute = true;
Process.Start(processStartInfo);
}
}
}