SimpleTable.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
{
// 此示例演示如何将 HTML 表格插入 PDF 中
// 以及其他(非 HTML)内容。
//
// 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 SimpleTable
{
public int 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: #fcf3cf;" +
" background-color: #2471a3;" +
" text-align: center;" +
" padding: 6px;" +
" margin-bottom: 0px;" +
"}" +
"table {" +
" border-bottom: 1px solid #ddd;" +
"}" +
"thead {display: table-header-group;}" +
"#employees {" +
" font-family: 'Trebuchet MS', Arial, Helvetica, sans-serif;" +
" border-collapse: collapse;" +
" width: 100%;" +
"}" +
"#employees td, #employees th {" +
" border: 0px solid #ddd;" +
" padding: 8px;" +
"}" +
"#employees tr:nth-child(even){background-color: #d4e6f1;}" +
"#employees tr:hover {background-color: #ddd;}" +
"#employees th {" +
" padding-top: 12px;" +
" padding-bottom: 12px;" +
" text-align: left;" +
" background-color: #2980b9;" +
" color: white;" +
"}" +
"</style>" +
"</head>" +
"<body>" +
TTAG +
"</body>" +
"</html>";
const string tableHead = "<h1>Employees</h1>";
const string tableFmt =
"<table id='employees'>" +
" <thead>" +
" <th>Name</th>" +
" <th>Address</th>" +
" <th>Country</th>" +
" </thead>" +
"{0}" +
"</table>";
const string dataRowFmt =
" <tr>" +
" <td>{0}</td>" +
" <td>{1}</td>" +
" <td>{2}</td>" +
" </tr>";
// 创建一个新的 PDF 文档:
var doc = new GcPdfDocument();
// 添加页面:
var page = doc.NewPage();
// 获取页面图形:
var g = page.Graphics;
var nrc = Common.Util.AddNote(
"这里我们使用从 XML 数据库获取的数据构建一个 HTML 表," +
"",
page);
// 从示例 NorthWind 数据库获取员工数据:
using (var ds = new DataSet())
{
ds.ReadXml(Path.Combine("Resources", "data", "DsNWind.xml"));
DataTable dtEmps = ds.Tables["Employees"];
var emps =
from emp in dtEmps.Select()
orderby emp["LastName"]
select new
{
Name = emp["LastName"] + ", " + emp["FirstName"],
Address = emp["Address"],
Country = emp["Country"]
};
// 构建 HTML 表格:
var sb = new StringBuilder();
sb.AppendLine(tableHead);
foreach (var emp in emps)
sb.AppendFormat(dataRowFmt, emp.Name, emp.Address, emp.Country);
var html = tableTpl.Replace(TTAG, string.Format(tableFmt, sb.ToString()));
// 创建一个用于呈现 HTML 的 GcHtmlBrowser 实例:
using var browser = Common.Util.NewHtmlBrowser();
// 渲染 HTML。
// 返回值指示是否已渲染任何内容。
// 输出参数 size 返回渲染内容的实际大小:
var ok = g.DrawHtml(browser, html, nrc.Left, nrc.Bottom + 36,
new HtmlToPdfFormat(false) { MaxPageWidth = nrc.Width / 72 },
out SizeF size);
Common.Util.AddNote(
"该文本添加到 HTML 表格下方。",
page,
new RectangleF(nrc.Left, nrc.Bottom + size.Height + 72, nrc.Width, int.MaxValue));
}
// 完毕:
doc.Save(stream);
return doc.Pages.Count;
}
}
}