指定html站点预览图片效果 示例源码下载

【实例截图】

【核心代码】

using System;
using System.Globalization;
using System.IO;
using System.Reflection;
using System.Windows.Forms;

namespace HtmlSitePreviewerDemo
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();

            udImages.Enabled = false;
            txtUrl.Text = @"http://www.yahoo.com";

            string testHtml = GetFromResources("HtmlSitePreviewerDemo.Test.TestHtml.html");
            htmlSitePreviewer1.RenderingComplete  = HtmlSitePreviewer1RenderingComplete;
            htmlSitePreviewer1.StartRenderHtml("http://www.asp.net", testHtml);
        }

        private void HtmlSitePreviewer1RenderingComplete()
        {
            udImages.Enabled = true;
            udImages.Maximum = htmlSitePreviewer1.NumberOfImages;
            lblNumberImages.Text = "Number of Images: "   htmlSitePreviewer1.NumberOfImages.ToString(CultureInfo.InvariantCulture);
        }

        private string GetFromResources(string resourceName)
        {
            Assembly assem = GetType().Assembly;
            using (Stream stream = assem.GetManifestResourceStream(resourceName))
            {
                if (stream != null)
                    using (var reader = new StreamReader(stream))
                    {
                        return reader.ReadToEnd();
                    }
                return "";
            }
        }

        private void BtnPreviewClick(object sender, EventArgs e)
        {
            udImages.Enabled = false;
            lblNumberImages.Text = "Number of Images:";
            htmlSitePreviewer1.StartRender(txtUrl.Text);
        }

        private void UdImagesValueChanged(object sender, EventArgs e)
        {
            htmlSitePreviewer1.ImageIndex = (int)udImages.Value;
        }
    }
}