ProductList.cs
// 完毕：
using System;
using System.IO;
using System.Drawing;
using System.Text;
using System.Data;
using System.Linq;
using System.Collections.Generic;
using GrapeCity.Documents.Pdf;
using GrapeCity.Documents.Text;
using GrapeCity.Documents.Html;
namespace DsPdfWeb.Demos
{
// 此示例展示了如何呈现报告（产品列表）
// 来自标准 NWind 示例数据库）使用 HTML 字符串
// 作为模板。通过循环数据记录来创建报告
// 并从表格行模板构建生成的 HTML，其中填充
// 实际数据。然后将生成的 HTML 字符串传递给 GcHtmlRenderer
// 创建 PDF。
//
// 请参阅HelloWorldHtml顶部评论中的注释
// 有关将 GcDocs.Html 添加到项目的详细信息的示例代码。
public class ProductList
{
public void CreatePDF(Stream stream)
{
const string TTAG = "___TABLE___";
// HTML 页面模板：
const string tableTpl =
"<!DOCTYPE html>" +
"<html>" +
"<head>" +
"<style>" +
"html * {" +
" font-family: 'Trebuchet MS', Arial, Helvetica, sans-serif !important;" +
"}" +
"h1 {" +
" color: #1a5276;" +
" background-color: #d2b4de;" +
" text-align: center;" +
" padding: 6px;" +
"}" +
"thead {display: table-header-group;}" +
"#products {" +
" font-family: 'Trebuchet MS', Arial, Helvetica, sans-serif;" +
" border-collapse: collapse;" +
" width: 100%;" +
"}" +
"#products td, #products th {" +
" border: 1px solid #ddd;" +
" padding: 8px;" +
"}" +
"#products tr:nth-child(even){background-color: #f2f2f2;}" +
"#products tr:hover {background-color: #ddd;}" +
"#products th {" +
" padding-top: 12px;" +
" padding-bottom: 12px;" +
" text-align: left;" +
" background-color: #a569bd;" +
" color: white;" +
"}" +
"</style>" +
"</head>" +
"<body>" +
TTAG +
"</body>" +
"</html>";
const string tableHead = "<h1>Product Price List</h1>";
const string tableFmt =
"<table id='products'>" +
" <thead>" +
" <th>Product ID</th>" +
" <th>Description</th>" +
" <th>Supplier</th>" +
" <th>Quantity Per Unit</th>" +
" <th>Unit Price</th>" +
" </thead>" +
"{0}" +
"</table>";
const string dataRowFmt =
" <tr>" +
" <td>{0}</td>" +
" <td>{1}</td>" +
" <td>{2}</td>" +
" <td>{3}</td>" +
" <td align='right'>{4:C}</td>" +
" </tr>";
using var ds = new DataSet();
ds.ReadXml(Path.Combine("Resources", "data", "DsNWind.xml"));
DataTable dtProds = ds.Tables["Products"];
DataTable dtSupps = ds.Tables["Suppliers"];
var products =
from prod in dtProds.Select()
join supp in dtSupps.Select()
on prod["SupplierID"] equals supp["SupplierID"]
orderby prod["ProductName"]
select new
{
ProductID = prod["ProductID"],
ProductName = prod["ProductName"],
Supplier = supp["CompanyName"],
QuantityPerUnit = prod["QuantityPerUnit"],
UnitPrice = prod["UnitPrice"]
};
var sb = new StringBuilder();
sb.AppendLine(tableHead);
foreach (var prod in products)
sb.AppendFormat(dataRowFmt, prod.ProductID, prod.ProductName, prod.Supplier, prod.QuantityPerUnit, prod.UnitPrice);
var html = tableTpl.Replace(TTAG, string.Format(tableFmt, sb.ToString()));
using var browser = Common.Util.NewHtmlBrowser();
using var htmlPage = browser.NewPage(html);
// PdfOptions 允许您提供 HTML 到 PDF 转换的选项：
var pdfOptions = new PdfOptions()
{
Margins = new PdfMargins(0.2f, 1, 0.2f, 1),
DisplayHeaderFooter = true,
HeaderTemplate = "<div style='color:#1a5276; font-size:12px; width:1000px; margin-left:0.2in; margin-right:0.2in'>" +
"<span style='float:left;'>Product Price List</span>" +
"<span style='float:right'>Page <span class='pageNumber'></span> of <span class='totalPages'></span></span>" +
"</div>",
FooterTemplate = "<div style='color: #1a5276; font-size:12em; width:1000px; margin-left:0.2in; margin-right:0.2in;'>" +
"<span>(c) MESCIUS inc. All Rights Reserved.</span>" +
"<span style='float:right'>Generated on <span class='date'></span></span></div>"
};
// 将源网页渲染到临时文件：
var tmp = Path.GetTempFileName();
htmlPage.SaveAsPdf(tmp, pdfOptions);
// 将创建的 PDF 从临时文件复制到目标流：
using (var ts = File.OpenRead(tmp))
ts.CopyTo(stream);
// 清理：
File.Delete(tmp);
// 完毕：
}
}
}