通过本文主要向大家介绍了c#网页数据抓取,c#网页制作,c#获取网页内容,c#网页编程,c#打开网页等相关知识,希望对您有所帮助,也希望大家支持linkedu.com www.linkedu.com
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;
&
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;
&