1、nuget 引用

Select.HtmlToPdf

2、方法

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、调用

/// <summary> /// 下载pdf /// </summary> public void Downpdf(string data) { var stream = new BQoolCommon.Helpers.File.WebToPdf().GetFileStreamByHtml(Gethtml(data)); Response.Clear(); //二进制流数据（如常见的文件下载） Response.ContentType = "application/octet-stream"; //通知浏览器下载文件而不是打开 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(); }

那么如何获取指定页面的html 呢 传入对应的model 获得指定动态的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(); } } }}