Html轉換爲PDF

通過nuget 添加  text7.pdfhtml

 /// <summary>
        /// pdf下載
        /// </summary> 
        /// <returns></returns>
        [ValidateInput(false)]
        [HttpPost]
        public ActionResult DownloadPDF(string htmlContent)
        { 
            if (string.IsNullOrEmpty(htmlContent))
            {
                return null;
            } 
            var properties = new ConverterProperties();
            properties.SetCharset("utf-8");
            var provider = new DefaultFontProvider(true, true, true);// 第三個參數爲True，以支持系統字體，否則不支持中文
            properties.SetFontProvider(provider);
            var mediaDeviceDescription = new MediaDeviceDescription(MediaType.PRINT);// 指當前設備類型，如果是預覽使用SCREEN 
            properties.SetMediaDeviceDescription(mediaDeviceDescription);

            string pdfPath = Server.MapPath("~/" + DateTime.UtcNow.Ticks.ToString() + ".pdf");
            using (var fileInfo = new FileStream(pdfPath, FileMode.Create))
            {
                HtmlConverter.ConvertToPdf(htmlContent, fileInfo, properties);
            }
            string fileName = PublicVars.SchoolName + "准考證.pdf";
            //方式1：
            //return File(pdfPath, "application/octet-stream", HttpUtility.UrlEncode(fileName));

            //方式2：
            var fileContent = new FileContentResult(System.IO.File.ReadAllBytes(pdfPath), "application/octet-stream");
            fileContent.FileDownloadName = Server.UrlEncode(fileName);
            //下載完成刪除文件
            System.IO.File.Delete(pdfPath);
            return fileContent;
        }