对指定的网页进行截图 C#版

时间:2010-02-24 15:01:54  来源:第二电脑网  作者:第二电脑网

  第二电脑网导读:ript 运行对截图貌似没任何影响,相当的正常,我个人都觉得很神奇。 首先对项目添加系统引用 System.Drawing; System.Drawing.Design; System.Windows.Forms; 获取指定网页并转换成图片的类: using System; using System.Collections.Generic; using System.Text; using System.Drawing; using System.Drawing.Drawing2D; using System.Dr...
  正文:碰到一个项目,需要对指定的网页进行截图保存,晕死! 需求永远都是怪异的..... 解决是关键~ 遂写了以下代码,快准狠!(因为赶时间!) 可以实现对指定的页面获取,按指定的大小生成缩略图,当然也可以1:1的产生图, 页面上的JavaScript 运行对截图貌似没任何影响,相当的正常,我个人都觉得很神奇。 首先对项目添加系统引用 System.Drawing; System.Drawing.Design; System.Windows.Forms; 获取指定网页并转换成图片的类: using System; using System.Collections.Generic; using System.Text; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Windows.Forms; using System.Diagnostics; namespace MyLib { public class GetImage { private int S_Height; private int S_Width; private int F_Height; private int F_Width; private string MyURL; public int ScreenHeight { get { return S_Height; } set { S_Height = value; } } public int ScreenWidth { get { return S_Width; } set { S_Width = value; } } public int ImageHeight { get { return F_Height; } set { F_Height = value; } } public int ImageWidth { get { return F_Width; } set { F_Width = value; } } public string WebSite { get { return MyURL; } set { MyURL = value; } } public GetImage(string WebSite, int ScreenWidth, int ScreenHeight, int ImageWidth, int ImageHeight) { this.WebSite = WebSite; this.ScreenWidth = ScreenWidth; this.ScreenHeight = ScreenHeight; this.ImageHeight = ImageHeight; this.ImageWidth = ImageWidth; } public Bitmap GetBitmap() { WebPageBitmap Shot = new WebPageBitmap(this.WebSite, this.ScreenWidth, this.ScreenHeight); Shot.GetIt(); Bitmap Pic = Shot.DrawBitmap(this.ImageHeight, this.ImageWidth); return Pic; } } class WebPageBitmap { WebBrowser MyBrowser; string URL; int Height; int Width; public WebPageBitmap(string url, int width, int height) { this.Height = height; this.Width = width; this.URL = url; MyBrowser = new WebBrowser(); MyBrowser.ScrollBarsEnabled = false; MyBrowser.Size = new Size(this.Width, this.Height); } public void GetIt() { MyBrowser.Navigate(this.URL); while (MyBrowser.ReadyState != WebBrowserReadyState.Complete) { Application.DoEvents(); } } public Bitmap DrawBitmap(int theight, int twidth) { Bitmap myBitmap = new Bitmap(Width, Height); Rectangle DrawRect = new Rectangle(0, 0, Width, Height); MyBrowser.DrawToBitmap(myBitmap, DrawRect); System.Drawing.Image imgOutput = myBitmap; System.Drawing.Image oThumbNail = new Bitmap(twidth, theight, imgOutput.PixelFormat); Graphics g = Graphics.FromImage(oThumbNail); g.CompositingQuality = CompositingQuality.HighSpeed; g.SmoothingMode = SmoothingMode.HighSpeed; g.InterpolationMode = InterpolationMode.HighQualityBilinear; Rectangle oRectangle = new Rectangle(0, 0, twidth, theight); g.DrawImage(imgOutput, oRectangle); try { return (Bitmap)oThumbNail; } catch (Exception ex) { return null; } finally { imgOutput.Dispose(); imgOutput = null; MyBrowser.Dispose(); MyBrowser = null; } } } } 以下是调用方法,懒省事的方法,嘿嘿,赶时间就不说什么了,反正上面的抓取转换类已经写出来了,大家尽情的用异步,线程等方法自己玩吧!~ string UrlPath; bool CaptureState = false; Guid guid; protected bool SaveOriginalPageToImage(Guid myGuid) { //使用guid 来命名 guid = myGuid; if (this.CurrentPageAct == PageAct.Edit) { string PagePath = Request.Url.LocalPath; PagePath = PagePath.Replace("Operation", "Capture"); UrlPath = PagePath + "?act=view&ProjectNo=" + _projectNo; Thread NewTh = new Thread(CaptureImage); NewTh.SetApartmentState(ApartmentState.STA); NewTh.Start(); while (NewTh.ThreadState == ThreadState.Running) { } //返回截取状态 return CaptureState; } return false; } /**//// /// 捕获屏幕 ///

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