EVO HTML to PDF Converter allows you to create a PDF form with various types of fields in a PDF document. The PDF form can be accessed using the DocumentForm property. You can add fields to PDF form using its AddTextBox, AddRadioButtonsGroup, AddCheckBox, AddComboBox, AddListBox methods.
Code Sample - Create a PDF Form in a PDF Document
protected void createPdfButton_Click(object sender, EventArgs e) { // Create a PDF document Document pdfDocument = new Document(); // Set license key received after purchase to use the converter in licensed mode // Leave it not set to use the converter in demo mode pdfDocument.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c="; // Add a page to PDF document PdfPage pdfPage = pdfDocument.AddPage(); try { // The font used for titles in PDF document PdfFont titlesFont = pdfDocument.AddFont(new Font("Times New Roman", 10, FontStyle.Bold, GraphicsUnit.Point)); // The font used for field names in PDF document PdfFont fieldNameFont = pdfDocument.AddFont(new Font("Times New Roman", 10, FontStyle.Regular, GraphicsUnit.Point)); // The font used for buttons text in PDF document PdfFont buttonTextFont = pdfDocument.AddFont(new Font("Times New Roman", 10, FontStyle.Regular, GraphicsUnit.Point)); // The font used for PDF form text box fields PdfFont textFieldFont = pdfDocument.AddFont(StdFontBaseFamily.Helvetica); textFieldFont.Size = 8; // The font used for PDF form combo box fields PdfFont comboBoxFieldFont = pdfDocument.AddFont(StdFontBaseFamily.Helvetica); comboBoxFieldFont.Size = 8; float xLocation = 5; float yLocation = 5; // Add document title TextElement titleTextElement = new TextElement(xLocation, yLocation, "Create PDF Forms", titlesFont); AddElementResult addElementResult = pdfPage.AddElement(titleTextElement); yLocation = addElementResult.EndPageBounds.Bottom + 15; // Add a text box field to PDF form TextElement fieldNameTextElement = new TextElement(xLocation, yLocation, 60, "First name:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); RectangleF fieldNameRectangle = addElementResult.EndPageBounds; RectangleF fieldBoundingRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 150, 15); // Create the form field PdfFormTextBox textBoxField = pdfDocument.Form.AddTextBox(pdfPage, fieldBoundingRectangle, "Enter First Name", textFieldFont); // Set unique form field name used when the form is submitted textBoxField.Name = "firstName"; // Set the form field default value textBoxField.DefaultValue = "A default first name"; // Set form field style textBoxField.Style.BackColor = Color.AliceBlue; yLocation = fieldNameRectangle.Bottom + 10; // Add a text box field to PDF form fieldNameTextElement = new TextElement(xLocation, yLocation, 60, "Last name:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); fieldNameRectangle = addElementResult.EndPageBounds; fieldBoundingRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 150, 15); // Create the form field textBoxField = pdfDocument.Form.AddTextBox(pdfPage, fieldBoundingRectangle, "Enter Last Name", textFieldFont); // Set unique form field name used when the form is submitted textBoxField.Name = "lastName"; // Set the form field default value textBoxField.DefaultValue = "A default last name"; // Set form field style textBoxField.Style.BackColor = Color.MistyRose; yLocation = fieldNameRectangle.Bottom + 10; // Add a password text box field to PDF form fieldNameTextElement = new TextElement(xLocation, yLocation, 60, "Password:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); fieldNameRectangle = addElementResult.EndPageBounds; fieldBoundingRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 150, 15); // Create the form field PdfFormTextBox passwordTextBoxField = pdfDocument.Form.AddTextBox(pdfPage, fieldBoundingRectangle, "", textFieldFont); // Set unique form field name used when the form is submitted passwordTextBoxField.Name = "password"; // Set form field style passwordTextBoxField.Style.BackColor = Color.AliceBlue; // Set the password mode for the text box passwordTextBoxField.IsPassword = true; yLocation = fieldNameRectangle.Bottom + 10; // Add a radio buttons group to PDF form fieldNameTextElement = new TextElement(xLocation, yLocation, 60, "Gender:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); fieldNameRectangle = addElementResult.EndPageBounds; // Create the radio buttons group PdfFormRadioButtonsGroup radioButtonsGroup = pdfDocument.Form.AddRadioButtonsGroup(pdfPage); // Set unique form field name used when the form is submitted radioButtonsGroup.Name = "gender"; // Set style of the radio buttons in this group radioButtonsGroup.Style.BackColor = Color.AntiqueWhite; // Add the first radio button to group RectangleF radioButtonRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 50, 10); // Create the form field PdfFormRadioButton radioButtonField = radioButtonsGroup.AddRadioButton(radioButtonRectangle, "male", pdfPage); fieldNameTextElement = new TextElement(fieldNameRectangle.Right + 22, yLocation, 30, "Male", fieldNameFont); pdfPage.AddElement(fieldNameTextElement); // Add the second radio button to group radioButtonRectangle = new RectangleF(fieldNameRectangle.Right + 60, yLocation, 50, 10); // Create the form field radioButtonField = radioButtonsGroup.AddRadioButton(radioButtonRectangle, "female", pdfPage); fieldNameTextElement = new TextElement(fieldNameRectangle.Right + 72, yLocation, 30, "Female", fieldNameFont); pdfPage.AddElement(fieldNameTextElement); // Set the selected radio btton in group radioButtonsGroup.SetCheckedRadioButton("male"); yLocation = fieldNameRectangle.Bottom + 10; // Add a checkbox field to PDF form fieldNameTextElement = new TextElement(xLocation, yLocation, 60, "Vehicle:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); fieldNameRectangle = addElementResult.EndPageBounds; fieldBoundingRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 10, 10); // Create the form field PdfFormCheckBox checkBoxField = pdfDocument.Form.AddCheckBox(pdfPage, fieldBoundingRectangle); // Set unique form field name used when the form is submitted checkBoxField.Name = "haveCar"; // Set form field style checkBoxField.Style.BackColor = Color.AntiqueWhite; // Set checkbox field checked state checkBoxField.Checked = true; fieldNameTextElement = new TextElement(fieldNameRectangle.Right + 22, yLocation, 50, "I have a car", fieldNameFont); pdfPage.AddElement(fieldNameTextElement); yLocation = fieldNameRectangle.Bottom + 10; // Add a combo box list field to PDF form fieldNameTextElement = new TextElement(xLocation, yLocation, 60, "Vehicle Type:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); fieldNameRectangle = addElementResult.EndPageBounds; fieldBoundingRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 50, 15); string[] comboBoxItems = new string[] { "Volvo", "Saab", "Audi", "Opel" }; // Create the form field PdfFormComboBox comboBoxField = pdfDocument.Form.AddComboBox(pdfPage, fieldBoundingRectangle, comboBoxItems, comboBoxFieldFont); // Set unique form field name used when the form is submitted comboBoxField.Name = "vehicleType"; // Set the form field default value comboBoxField.DefaultValue = "Audi"; // Set form field style comboBoxField.Style.BackColor = Color.LightCyan; // Set selected item in combo box comboBoxField.Value = "Audi"; yLocation = fieldNameRectangle.Bottom + 10; // Add a multiline text box field to PDF form fieldNameTextElement = new TextElement(xLocation, yLocation + 20, 60, "Comments:", fieldNameFont); addElementResult = pdfPage.AddElement(fieldNameTextElement); fieldNameRectangle = addElementResult.EndPageBounds; fieldBoundingRectangle = new RectangleF(fieldNameRectangle.Right + 10, yLocation, 150, 60); // Create the form field PdfFormTextBox multilineTextBoxField = pdfDocument.Form.AddTextBox(pdfPage, fieldBoundingRectangle, "Enter your comments here:\r\nFirst comment line\r\nSecond comment line", textFieldFont); // Set unique form field name used when the form is submitted multilineTextBoxField.Name = "comments"; // Set form field style multilineTextBoxField.Style.BackColor = Color.AliceBlue; // Set the multiline mode for text box field multilineTextBoxField.IsMultiLine = true; yLocation = yLocation + 70; // Add a form submit button to PDF form fieldBoundingRectangle = new RectangleF(xLocation, yLocation, 75, 15); PdfFormButton submitFormButton = pdfDocument.Form.AddButton(pdfPage, fieldBoundingRectangle, "Submit", buttonTextFont); // Set unique form field name used when the form is submitted submitFormButton.Name = "submitFormButton"; // Set form field style submitFormButton.Style.BackColor = Color.Beige; // Create the form submit action PdfSubmitFormAction submitFormAction = new PdfSubmitFormAction(submitUrlTextBox.Text); // Form values will be submitted in HTML form format submitFormAction.Flags |= PdfFormSubmitFlags.ExportFormat; if (getMethodRadioButton.Checked) submitFormAction.Flags |= PdfFormSubmitFlags.GetMethod; // Set the form submit button action submitFormButton.Action = submitFormAction; // Add a form reset button to PDF form fieldBoundingRectangle = new RectangleF(xLocation + 100, yLocation, 75, 15); PdfFormButton resetFormButton = pdfDocument.Form.AddButton(pdfPage, fieldBoundingRectangle, "Reset", buttonTextFont); // Set unique form field name used when the form is submitted resetFormButton.Name = "resetFormButton"; // Set form field style resetFormButton.Style.BackColor = Color.Beige; // Create the form reset action PdfResetFormAction resetFormAction = new PdfResetFormAction(); // Set the form reset button action resetFormButton.Action = resetFormAction; // Save the PDF document in a memory buffer byte[] outPdfBuffer = pdfDocument.Save(); // Send the PDF as response to browser // Set response content type Response.AddHeader("Content-Type", "application/pdf"); // Instruct the browser to open the PDF file as an attachment or inline Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Create_PDF_Forms.pdf; size={0}", outPdfBuffer.Length.ToString())); // Write the PDF document buffer to HTTP response Response.BinaryWrite(outPdfBuffer); // End the HTTP response and stop the current page processing Response.End(); } finally { // Close the PDF document pdfDocument.Close(); } }