Create PDF Documents

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;

// Use EVO PDF Namespace
using EvoPdfClient;

namespace EvoHtmlToPdfDemo.Controllers.PDF_Creator
{
    public class PDF_Creator_Create_PDF_DocumentsController : Controller
    {
        // GET: PDF_Creator_Create_PDF_Documents
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult CreatePdf(IFormCollection collection)
        {
            // Get the PDF Standard
            // By default the Full PDF standard is used
            PdfStandardSubset pdfStandard = PdfStandardSubset.Full;
            if (collection["PdfStandard"] == "pdfARadioButton")
                pdfStandard = PdfStandardSubset.Pdf_A_1b;
            else if (collection["PdfStandard"] == "pdfXRadioButton")
                pdfStandard = PdfStandardSubset.Pdf_X_1a;

            // Get the Color Space
            // By default the RGB color space is used
            ColorSpace pdfColorSpace = ColorSpace.RGB;
            if (collection["PdfColorSpace"] == "grayScaleRadioButton")
                pdfColorSpace = ColorSpace.Gray;
            else if (collection["PdfColorSpace"] == "cmykRadioButton")
                pdfColorSpace = ColorSpace.CMYK;

            // Create the PDF document
            Document pdfDocument = null;

            // Get the server options
            string serverIP = collection["textBoxServerIP"];
            uint serverPort = uint.Parse(collection["textBoxServerPort"]);
            string servicePassword = collection["textBoxServicePassword"];
            bool useServicePassword = servicePassword.Length > 0;
            bool useTcpService = collection["ServerType"] == "radioButtonUseTcpService";
            string webServiceUrl = collection["textBoxWebServiceUrl"];

            if (pdfStandard == PdfStandardSubset.Full && pdfColorSpace == ColorSpace.RGB)
            {
                // Create a PDF document with default standard and color space
                if (useTcpService)
                    pdfDocument = new Document(serverIP, serverPort);
                else
                    pdfDocument = new Document(true, webServiceUrl);
            }
            else
            {
                // Create a PDF document with the selected standard and color space
                if (useTcpService)
                    pdfDocument = new Document(serverIP, serverPort, pdfStandard, pdfColorSpace);
                else
                    pdfDocument = new Document(true, webServiceUrl, pdfStandard, pdfColorSpace);
            }

            // Set optional service password
            if (useServicePassword)
                pdfDocument.ServicePassword = servicePassword;

            // 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=";

            // Get the selected PDF page size
            PdfPageSize pdfPageSize = SelectedPdfPageSize(collection["pdfPageSizeDropDownList"]);

            // Get the selected PDF page orientation
            PdfPageOrientation pdfPageOrientation = SelectedPdfPageOrientation(collection["pdfPageOrientationDropDownList"]);

            // Get the PDF page margins
            PdfMargins pdfPageMargins = new PdfMargins(float.Parse(collection["leftMarginTextBox"]), float.Parse(collection["rightMarginTextBox"]),
                    float.Parse(collection["topMarginTextBox"]), float.Parse(collection["bottomMarginTextBox"]));

            // Create a PDF page in PDF document
            PdfPage firstPdfPage = pdfDocument.AddPage(pdfPageSize, pdfPageMargins, pdfPageOrientation);

            // The URL of the HTML page to convert to PDF
            string urlToConvert = "http://www.evopdf.com";

            // Create the HTML to PDF element
            HtmlToPdfElement htmlToPdfElement = new HtmlToPdfElement(urlToConvert);

            // Optionally set a delay before conversion to allow asynchonous scripts to finish
            htmlToPdfElement.ConversionDelay = 2;

            // Add the HTML to PDF element to PDF document
            firstPdfPage.AddElement(htmlToPdfElement);

            // Save the PDF document in a memory buffer
            byte[] outPdfBuffer = pdfDocument.Save();

            // Send the PDF file to browser
            FileResult fileResult = new FileContentResult(outPdfBuffer, "application/pdf");
            fileResult.FileDownloadName = "Create_PDF_Documents.pdf";

            return fileResult;
        }

        private PdfPageSize SelectedPdfPageSize(string selectedValue)
        {
            switch (selectedValue)
            {
                case "A0":
                    return PdfPageSize.A0;
                case "A1":
                    return PdfPageSize.A1;
                case "A10":
                    return PdfPageSize.A10;
                case "A2":
                    return PdfPageSize.A2;
                case "A3":
                    return PdfPageSize.A3;
                case "A4":
                    return PdfPageSize.A4;
                case "A5":
                    return PdfPageSize.A5;
                case "A6":
                    return PdfPageSize.A6;
                case "A7":
                    return PdfPageSize.A7;
                case "A8":
                    return PdfPageSize.A8;
                case "A9":
                    return PdfPageSize.A9;
                case "ArchA":
                    return PdfPageSize.ArchA;
                case "ArchB":
                    return PdfPageSize.ArchB;
                case "ArchC":
                    return PdfPageSize.ArchC;
                case "ArchD":
                    return PdfPageSize.ArchD;
                case "ArchE":
                    return PdfPageSize.ArchE;
                case "B0":
                    return PdfPageSize.B0;
                case "B1":
                    return PdfPageSize.B1;
                case "B2":
                    return PdfPageSize.B2;
                case "B3":
                    return PdfPageSize.B3;
                case "B4":
                    return PdfPageSize.B4;
                case "B5":
                    return PdfPageSize.B5;
                case "Flsa":
                    return PdfPageSize.Flsa;
                case "HalfLetter":
                    return PdfPageSize.HalfLetter;
                case "Ledger":
                    return PdfPageSize.Ledger;
                case "Legal":
                    return PdfPageSize.Legal;
                case "Letter":
                    return PdfPageSize.Letter;
                case "Letter11x17":
                    return PdfPageSize.Letter11x17;
                case "Note":
                    return PdfPageSize.Note;
                default:
                    return PdfPageSize.A4;
            }
        }

        private PdfPageOrientation SelectedPdfPageOrientation(string selectedValue)
        {
            return (selectedValue == "Portrait") ? PdfPageOrientation.Portrait : PdfPageOrientation.Landscape;
        }
    }
}