摘要：
1.使用System.Windows下的WebBrowser控件。表单命名空间以加载网页并生成图像GiHub引用地址：https://github.com/tianma3798/FileOparate/用法：publicstaticvoidTestOne（）｛ThumbnailImgimg=newThumbnalImg（“e:one.png”）；//img.SetToJpeg（）//
1.使用System.Windows.Forms命名空间下的WebBrowser控件加载网页并生成图片
GiHub参考地址：
https://github.com/tianma3798/FileOparate/
使用方法：
public static voidTestOne() { ThumbnailImg img = new ThumbnailImg("e:\one.png"); //img.SetToJpeg(); //img.SetToGif(); ThumbnailOperate _operate = new ThumbnailOperate("http://korea.weilanliuxue.cn", img); _operate.GenerateImg(); Console.WriteLine("保存成功"); }
核心代码类：
/// <summary> ///网页生成生成图片帮助类 /// </summary> public classThumbnail { /// <summary> ///网页生成的图片 /// </summary> privateBitmap _bitmap; private string_url; private int_browserWidth, _browserHeight, _tWidth, _tHeight; /// <summary> ///是否使用，指定的宽度和高度 /// </summary> public bool IsCustumer { get; set; } /// <summary> ///指定网页地址，使用页面的body的高度 ///生成图片的，宽度和高度与body相同 /// </summary> /// <param name="url">网页地址</param> /// <param name="browserWidth">浏览器宽度</param> public Thumbnail(string url, intbrowserWidth) { IsCustumer = false; _url =url; _browserWidth =browserWidth; } /// <summary> ///初始化构造 /// </summary> /// <param name="url">网页地址</param> /// <param name="browserWidth">浏览器宽度</param> /// <param name="browserHeight">浏览器高度</param> /// <param name="tWidth">生成图片宽度</param> /// <param name="tHeight">生成图片高度</param> public Thumbnail(string url, int browserWidth, int browserHeight, int tWidth, inttHeight) { IsCustumer = true; _url =url; _browserWidth =browserWidth; _browserHeight =browserHeight; _tWidth =tWidth; _tHeight =tHeight; } /// <summary> ///获取网页的图片 /// </summary> /// <param name="url">网页地址</param> /// <param name="browserWidth">浏览器宽度</param> /// <param name="browserHeight">浏览器高度</param> /// <param name="tWidth">生成图片宽度</param> /// <param name="tHeight">生成图片高度</param> public static Bitmap GetThumbnail(string url, int browserWidth, int browserHeight, int tWidth, inttHeight) { Thumbnail thumb = newThumbnail(url, browserWidth, browserHeight, tWidth, tHeight); returnthumb.GenerateImage(); } /// <summary> ///生成图片信息 /// </summary> /// <returns></returns> publicBitmap GenerateImage() { Thread thread = new Thread(newThreadStart(_GenerateImage)); thread.SetApartmentState(ApartmentState.STA); thread.Start(); thread.Join(); return_bitmap; } /// <summary> ///使用WebBrowser生成图片 /// </summary> private void_GenerateImage() { WebBrowser browser = newWebBrowser(); browser.ScrollBarsEnabled = false; browser.ScriptErrorsSuppressed = false; browser.Navigate(_url); browser.DocumentCompleted += newWebBrowserDocumentCompletedEventHandler(_DocumentCompleted); while (browser.ReadyState !=WebBrowserReadyState.Complete) Application.DoEvents(); browser.Dispose(); } /// <summary> ///页面加载完成事件 /// </summary> private void _DocumentCompleted(objectsender, WebBrowserDocumentCompletedEventArgs e) { WebBrowser browser = sender asWebBrowser; if(IsCustumer) { //生成自定义宽度和高度的图片 browser.ClientSize = newSize(_browserWidth, _browserHeight); _bitmap = newBitmap(browser.Bounds.Width, browser.Bounds.Height); browser.DrawToBitmap(_bitmap, browser.Bounds); _bitmap = (Bitmap)_bitmap.GetThumbnailImage(_tWidth, _tHeight, null, IntPtr.Zero); } else { //生成默认body宽度和高度的图片（最常用） _browserHeight = 5000; if (browser.Document.Body != null) { _browserHeight =browser.Document.Body.OffsetRectangle.Height; browser.ClientSize = newSize(_browserWidth, _browserHeight); Rectangle bodyRect =browser.Document.Body.OffsetRectangle; _bitmap = newBitmap(_browserWidth, bodyRect.Height); browser.BringToFront(); browser.DrawToBitmap(_bitmap, bodyRect); _bitmap = (Bitmap)_bitmap.GetThumbnailImage(_browserWidth, bodyRect.Height, null, IntPtr.Zero); } else { browser.ClientSize = newSize(_browserWidth, _browserHeight); _bitmap = newBitmap(_browserWidth, _browserHeight); browser.BringToFront(); browser.DrawToBitmap(_bitmap, new Rectangle(0,0,_browserWidth,_browserHeight)); _bitmap = (Bitmap)_bitmap.GetThumbnailImage(_browserWidth, _browserHeight, null, IntPtr.Zero); } //_bitmap = (Bitmap)_bitmap.GetThumbnailImage(bodyRect.Width, bodyRect.Height, null, IntPtr.Zero); } } }