// // This code is part of Document Solutions for PDF demos. // Copyright (c) MESCIUS inc. All rights reserved. // using System.Drawing; using System.IO; using System.Linq; using System.Xml; using System.Text; using System.Collections.Generic; using GrapeCity.Documents.Pdf; using GrapeCity.Documents.Pdf.AcroForms; using GrapeCity.Documents.Pdf.Actions; using GrapeCity.Documents.Pdf.Annotations; using GrapeCity.Documents.Text; namespace DsPdfWeb.Demos { // This sample creates an AcroForm PDF that can be submitted to the server. // The server then uses the (new in DsPdf v3) GcPdfDocument.ImportFormDataFromCollection() // method to import the submitted data into a PDF that contains a similarly structured // PDF form, and sends the form filled with user provided data back to the client. // // Note that the produced PDF with filled form fields // is shown in the client browser's default PDF viewer. // // This sample is similar to the now obsolete FormSubmitXml sample, // but the server side is much simpler as it uses the new ImportFormDataFromCollection() // method that accepts a data structure very similar to how data is sent from the client form, // so almost no code is needed to manipulate that data. // See also the FormSubmit sample. public class FormDataSubmit { public int CreatePDF(Stream stream) { var doc = new GcPdfDocument(); var page = doc.NewPage(); var rc = Common.Util.AddNote( "Fill the fields in the form and click 'Submit' to send it back to the server. " + "The sample server will use the GcPdfDocument.ImportFormDataFromCollection() method " + "to import the submitted data into a different but compatible PDF form, " + "and the filled form will be sent back to your browser. " + "Note that the filled form is opened in the browser's default PDF viewer, " + "and does not have the 'Submit' and 'Reset' buttons.", page); var g = page.Graphics; var tf = new TextFormat() { Font = StandardFonts.Times, FontSize = 14 }; var ip = new PointF(72, rc.Bottom + 36); float fldOffset = 72 * 2 + 46; float fldHeight = tf.FontSize * 1.2f; float dY = 32; // Text field: g.DrawString("First name:", tf, ip); var fldFirstName = new TextField() { Name = "FirstName", Value = "John" }; fldFirstName.Widget.Page = page; fldFirstName.Widget.Rect = new RectangleF(ip.X + fldOffset, ip.Y, 72 * 3, fldHeight); fldFirstName.Widget.DefaultAppearance.Font = tf.Font; fldFirstName.Widget.DefaultAppearance.FontSize = tf.FontSize; doc.AcroForm.Fields.Add(fldFirstName); ip.Y += dY; // Text field: g.DrawString("Last name:", tf, ip); var fldLastName = new TextField() { Name = "LastName", Value = "Smith" }; fldLastName.Widget.Page = page; fldLastName.Widget.Rect = new RectangleF(ip.X + fldOffset, ip.Y, 72 * 3, fldHeight); fldLastName.Widget.DefaultAppearance.Font = tf.Font; fldLastName.Widget.DefaultAppearance.FontSize = tf.FontSize; doc.AcroForm.Fields.Add(fldLastName); ip.Y += dY; // Checkbox: g.DrawString("Subscribe to Mailing List:", tf, ip); var fldCheckbox = new CheckBoxField() { Name = "Subscribe", Checked = true }; fldCheckbox.Widget.Page = page; fldCheckbox.Widget.Rect = new RectangleF(ip.X + fldOffset, ip.Y, fldHeight, fldHeight); doc.AcroForm.Fields.Add(fldCheckbox); ip.Y += dY; // Multiline TextBox: g.DrawString("Additional information:", tf, ip); var fldAdditionalInfo = new TextField() { Name = "AdditionalInfo", Multiline = true }; fldAdditionalInfo.Widget.Page = page; fldAdditionalInfo.Widget.Rect = new RectangleF(ip.X + fldOffset, ip.Y, 72 * 3, fldHeight * 2); fldAdditionalInfo.Widget.DefaultAppearance.Font = tf.Font; fldAdditionalInfo.Widget.DefaultAppearance.FontSize = tf.FontSize; doc.AcroForm.Fields.Add(fldAdditionalInfo); ip.Y += dY * 2; // Submit form button: var btnSubmit = new PushButtonField(); btnSubmit.Widget.Rect = new RectangleF(ip.X + fldOffset, ip.Y, 72, fldHeight); btnSubmit.Widget.ButtonAppearance.Caption = "Submit"; btnSubmit.Widget.Highlighting = HighlightingMode.Invert; btnSubmit.Widget.Page = page; // The URL for the submission: btnSubmit.Widget.Activate = new ActionSubmitForm("/Samples/HandleFormDataSubmit"); doc.AcroForm.Fields.Add(btnSubmit); // Reset form button: var btnReset = new PushButtonField(); btnReset.Widget.Rect = new RectangleF(ip.X + fldOffset + 72 * 1.5f, ip.Y, 72, fldHeight); btnReset.Widget.ButtonAppearance.Caption = "Reset"; btnReset.Widget.Highlighting = HighlightingMode.Invert; btnReset.Widget.Page = page; btnReset.Widget.Activate = new ActionResetForm(); doc.AcroForm.Fields.Add(btnReset); ip.Y += dY; // Done: doc.Save(stream); return doc.Pages.Count; } // // NOTE: the code below is used by the web sample browser controller when the form // prepared by this sample is submitted, it is not directly called by the CreatePDF() method. // // Creates a GcPdfDocument, loads an AcroForm PDF into it, and fills it with data // using the GcPdfDocument.ImportFormDataFromCollection() method. // // This method is called by the samples controller when the form prepared by this sample // is submitted by the user. The controller method converts the IFormCollection that it // receives to an array or key value pairs, where keys are field names and values are // lists of string values, then calls this method to import the values into the // compatible ImportFormXML.pdf PDF form. That form is then sent back to the client. // // The controller code that calls this method looks like this: // // public IActionResult HandleFormDataSubmit(IFormCollection fields) // { // var values = fields.ToList(); // var fieldValues = values.Select(kvp_ => new KeyValuePair<string, IList<string>>(kvp_.Key, kvp_.Value.ToArray())).ToArray(); // var ms = Samples.FormDataSubmit.ImportFormData(fieldValues); // var result = new FileStreamResult(ms, "application/pdf"); // return result; // } public static Stream ImportFormData(KeyValuePair<string, IList<string>>[] fieldValues) { var pdf = new GcPdfDocument(); using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "ImportFormFromCollection.pdf")); // Load compatible empty form: pdf.Load(fs); // Import submitted data: pdf.ImportFormDataFromCollection(fieldValues); // Done: var outMs = new MemoryStream(); pdf.Save(outMs); outMs.Seek(0, SeekOrigin.Begin); return outMs; } } }