C#怎么将 HTML转换为图片或 PDF？-木庄网络博客

本文摘自PHP中文网，作者零下一度，侵删。

首先是把 HTML 转换为图片。

public partial class Form1 : Form
    {public Form1()
        {
            InitializeComponent();
        }
 
        WebBrowser webBrowser = null;public void ConvertToImg()
        {
            webBrowser = new WebBrowser();//是否显式滚动条webBrowser.ScrollBarsEnabled = false;//加载HTML页面的地址webBrowser.Navigate("");            //页面加载完成执行事件webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted);
        }private void webBrowser_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作        {//获取解析后HTML的大小System.Drawing.Rectangle rectangle = webBrowser.Document.Body.ScrollRectangle;int width = rectangle.Width;int height = rectangle.Height;//设置解析后HTML的可视区域webBrowser.Width = width;
            webBrowser.Height = height;
 
            Bitmap bitmap = new System.Drawing.Bitmap(width, height);
            webBrowser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height));//设置图片文件保存路径和图片格式，格式可以自定义string filePath = AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png";
            bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
        }private void button1_Click(object sender, EventArgs e)
        {
            ConvertToImg();
        }
    }

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上面这种方法是解析指定URL地址的HTML，然后转换为图片。当然，也可以直接写一些HTML标签。如下：

public partial class Form1 : Form
    {public Form1()
        {
            InitializeComponent();
        }
 
        WebBrowser webBrowser = null;public void ConvertToImg()
        {string html = "<div><table border = \"1\" cellspacing = \"0\" cellpadding = \"3\" style = \"text-align:center;\"><tr><th style = \"width:60px;\">字段1</th><th style = \"width:60px;\">字段2</th><th style = \"width:60px;\">字段3</th></tr><tr style = \"color:green;\"><td>小明</td><td>22</td><td>185</td></tr><tr style = \"color:red;\"><td>小青</td><td>21</td><td>170</td></tr></table></div>";
 
            webBrowser = new WebBrowser();//是否显式滚动条webBrowser.ScrollBarsEnabled = false;//加载 htmlwebBrowser.DocumentText = html;            //页面加载完成执行事件webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted);
        }private void webBrowser_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作        {//获取解析后HTML的大小System.Drawing.Rectangle rectangle = webBrowser.Document.Body.ScrollRectangle;int width = rectangle.Width;int height = rectangle.Height;//设置解析后HTML的可视区域webBrowser.Width = width;
            webBrowser.Height = height;
 
            Bitmap bitmap = new System.Drawing.Bitmap(width, height);
            webBrowser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height));//设置图片文件保存路径和图片格式，格式可以自定义string filePath = AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png";
            bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
        }private void button1_Click(object sender, EventArgs e)
        {
            ConvertToImg();
        }
    }

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