对指定的网页进行截图代码,CSharp代码库,德仔网

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代码分类
【CSharp】对指定的网页进行截图
作者:Dezai.CN / 发布于2011/9/28/ 615
<div>
<div id="cnblogs_post_body">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; 
} 

/**//// <summary> 
/// 捕获屏幕 
/// </summary> 
/// <param name="UrlPath"></param> 
/// <returns></returns> 
public void CaptureImage() 
{ 
try 
{ 
string url = "http://" + Request.Url.Host + ":" + Request.Url.Port.ToString(); 
url = url + UrlPath; 

GetImage thumb = new GetImage(url, 1024, 1200, 1024, 1200); 
System.Drawing.Bitmap x = thumb.GetBitmap(); 
string FileName = DateTime.Now.ToString("yyyyMMddhhmmss"); 

x.Save(Server.MapPath("~/Capture/SavePage") + "\\" + guid + ".jpg"); 
CaptureState = true; 
} 
catch (Exception ex) 
{ 
CaptureState = false; 
} 
} <!--NEWSZW_HZH_END--></div>
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