调用：
引用 System.Windows.Forms 命名空间：
WebsiteToImage websiteToImage = new WebsiteToImage("页面路径", @"图片保存路径");
websiteToImage.Generate();
被调用代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;
using System.Drawing.Imaging;
using System.IO;
namespace Business {
public class WebsiteToImage {
private Bitmap m_Bitmap;
private string m_Url;
private string m_FileName = string.Empty;
public WebsiteToImage(string url)
{
m_Url = url;
}
/// </summary>
/// <param name="url">网页路径</param>
/// <param name="fileName">照片存储路径</param>
public WebsiteToImage(string url, string fileName)
{
m_Url = url;
m_FileName = fileName;
}
public Bitmap Generate()
{
var m_thread = new Thread(_Generate);
m_thread.SetApartmentState(ApartmentState.STA);
m_thread.Start();
m_thread.Join();
return m_Bitmap;
}
private void _Generate()
{
var browser = new WebBrowser{ScrollBarsEnabled = false };
browser.Navigate(m_Url);
browser.DocumentCompleted += WebBrowser_DocumentCompleted;
while (browser.ReadyState != WebBrowserReadyState.Complete)
{
Application.DoEvents();
}
browser.Dispose();
}
private void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
var browser = (WebBrowser)sender;
//宽，高
browser.ClientSize = new Size(618,500);
browser.ScrollBarsEnabled = false;
//宽，高
m_Bitmap = new Bitmap(618, 500);
browser.BringToFront();
browser.DrawToBitmap(m_Bitmap, browser.Bounds);
if (m_FileName.Length > 0)
{
m_Bitmap.SaveJPG100(m_FileName);
}
}
}
public static class BitmapExtensions
{
public static void SaveJPG100(this Bitmap bmp, string filename)
{
var encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);
bmp.Save(filename, GetEncoder(ImageFormat.Jpeg), encoderParameters);
}
public static void SaveJPG100(this Bitmap bmp, Stream stream)
{
var encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);
bmp.Save(stream, GetEncoder(ImageFormat.Jpeg), encoderParameters);
}
public static ImageCodecInfo GetEncoder(ImageFormat format)
{
var codecs = ImageCodecInfo.GetImageDecoders();
foreach (var codec in codecs)
{
if (codec.FormatID == format.Guid)
{
return codec;
}
}
return null;
}
}
}
