Install-Package Select.HtmlToPdf

• using SelectPdf;using System.Collections.Specialized;using System.IO;using System.Web;
  namespace BQoolCommon.Helpers.File{ public class WebToPdf { public WebToPdf() { //SelectPdf.GlobalProperties.LicenseKey = "your-license-key"; }
   /// <summary> /// 將 Html 轉成 PDF，並儲存成檔案 /// </summary> /// <param name="html">html</param> /// <param name="fileName">絕對路徑</param> public void SaveToFileByHtml(string html, string fileName) { var doc = SetPdfDocument(html); doc.Save(fileName); }
   /// <summary> /// 傳入 Url 轉成 PDF，並儲存成檔案 /// </summary> /// <param name="url">url</param> /// <param name="fileName">絕對路徑</param> /// <param name="httpCookies">Cookies</param> public void SaveToFileByUrl(string url, string fileName, NameValueCollection httpCookies) { var doc = SetPdfDocument(url, httpCookies); doc.Save(fileName); }
   /// <summary> /// 將 Html 轉成 PDF，並輸出成 byte[] 格式 /// </summary> /// <param name="html">html</param> /// <returns></returns> public byte[] GetFileByteByHtml(string html) { var doc = SetPdfDocument(html); return doc.Save(); }
   /// <summary> /// 傳入 Url 轉成 PDF，並輸出成 byte[] 格式 /// </summary> /// <param name="url">url</param> /// <param name="httpCookies">Cookies</param> /// <returns></returns> public byte[] GetFileByteByUrl(string url, NameValueCollection httpCookies) { var doc = SetPdfDocument(url, httpCookies); return doc.Save(); }
   /// <summary> /// 將 Html 轉成 PDF，並輸出成 Stream 格式 /// </summary> /// <param name="html">html</param> /// <returns></returns> public Stream GetFileStreamByHtml(string html) { var doc = SetPdfDocument(html); var pdfStream = new MemoryStream();
   doc.Save(pdfStream); pdfStream.Position = 0;
   return pdfStream; }
   /// <summary> /// 傳入 Url 轉成 PDF，並輸出成 Stream 格式 /// </summary> /// <param name="html">html</param> /// <returns></returns> public Stream GetFileStreamByUrl(string url, NameValueCollection httpCookies) { var doc = SetPdfDocument(url, httpCookies); var pdfStream = new MemoryStream();
   doc.Save(pdfStream); pdfStream.Position = 0;
   return pdfStream; }
   private PdfDocument SetPdfDocument(string html) { var converter = new HtmlToPdf();
   converter.Options.WebPageWidth = 1200; html = HttpUtility.HtmlDecode(html);
   return converter.ConvertHtmlString(html); }
   private PdfDocument SetPdfDocument(string url, NameValueCollection httpCookies) { var converter = new HtmlToPdf(); converter.Options.WebPageWidth = 1200;
   if (httpCookies !=  && httpCookies.Count != 0) { converter.Options.HttpCookies.Add(httpCookies); }
   return converter.ConvertUrl(url); }
   }}

  3、調用

  • /// <summary> /// 下載pdf /// </summary> public void Downpdf(string data) { var stream = new BQoolCommon.Helpers.File.WebToPdf().GetFileStreamByHtml(Gethtml(data)); Response.Clear(); //二進制流數據（如常見的文件下載） Response.ContentType = "application/octet-stream"; //通知瀏覽器下載文件而不是打開 Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode("Profit and Loss Statement.pdf", System.Text.Encoding.UTF8)); var bytes = StreamToBytes(stream); Response.BinaryWrite(bytes); Response.Flush(); stream.Close(); stream.Dispose();
     Response.End(); }

    那么如何獲取指定頁面的html 呢 傳入對應的model 獲得指定動態的html

    • private string Gethtml(string data) { string str = "";
       str = this.ControllerContext.RenderViewToString("ProfitDetails", data);
       return str; }

      • using BQoolCommon.Helpers.Format;using Newtonsoft.Json;using OrdersManager.Models.ViewModel.Report;using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Web;using System.Web.Mvc;
        namespace OrdersManager.Web.Infrastructure{ public static class HelperExtensions { public static string RenderViewToString(this ControllerContext context, string viewName, string data) { if (string.IsOrEmpty(viewName)) viewName = context.RouteData.GetRequiredString("action");
         context.Controller.ViewData.Model = JsonConvert.DeserializeObject<ProfitDetailsmodel>(StringTools.Base64Decode(StringTools.Base64Decode(data)));
         using (var sw = new StringWriter()) { ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(context, viewName); var viewContext = new ViewContext(context, viewResult.View, context.Controller.ViewData, context.Controller.TempData, sw); try { viewResult.View.Render(viewContext, sw); } catch (Exception ex) { throw; }
         return sw.GetStringBuilder().ToString(); } } }}

        參考文檔

        https://www.nuget.org/packages/Select.HtmlToPdf/