WinForm将html内容转化成图片

版权声明： https://blog.csdn.net/Bibabu135766/article/details/79566793

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace TCP
{
    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 html
            webBrowser.Navigate("http://www.baidu.com");

            //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 + "Img\\" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png";
            bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            ConvertToImg();
        }
    }

}