c#图片工具：c#快速提取网页图片的代码

public Array MatchHtml(string html,string com)
{
List<string> urls = new List<string>();
html = html.ToLower();
//获取src标签中url
Regex regexSrc = new Regex("src="[^"]*[(.jpg)(.png)(.gif)(.bmp)(.ico)]"");
foreach(Match m in regexSrc.Matches(html))
{
 string src = m.Value;
 src = src.Replace("src=","").Replace(""","");
 if (!src.Contains("http"))
 src = com + src;
 if(!urls.Contains(src))
 urls.Add(src);
}
//获取href标签中url
Regex regexHref = new Regex("href="[^"]*[(.jpg)(.png)(.gif)(.bmp)(.ico)]"");
foreach (Match m in regexHref.Matches(html))
{
 string href = m.Value;
 href = href.Replace("href=", "").Replace(""", "");
 if (!href.Contains("http"))
 href = com + href;
 if(!urls.Contains(href))
 urls.Add(href);
}
return urls.ToArray();
}

[DllImport("kernel32.dll")]
static extern bool SetConsoleMode(IntPtr hConsoleHandle, int mode);
[DllImport("kernel32.dll")]
static extern bool GetConsoleMode(IntPtr hConsoleHandle, out int mode);
[DllImport("kernel32.dll")]
static extern IntPtr GetStdHandle(int handle);
const int STD_INPUT_HANDLE = -10;
const int ENABLE_QUICK_EDIT_MODE = 0x40 | 0x80;
public static void EnableQuickEditMode()
{
int mode; IntPtr handle = GetStdHandle(STD_INPUT_HANDLE);
GetConsoleMode(handle, out mode);
mode |= ENABLE_QUICK_EDIT_MODE;
SetConsoleMode(handle, mode);
}
static void Main(string[] args)
{
EnableQuickEditMode();
int oldCount = 0;
Console.Title = "TakeImageFromInternet";
string path = "E:Downloadloading";
while (true)
{
 Console.Clear();
 string countFile = "E:CountFile.txt";//用来计数的文本，以至于文件名不重复
 int cursor = 0;
 if (File.Exists(countFile))
 {
 string text = File.ReadAllText(countFile);
 try
 {
  cursor =oldCount = Convert.ToInt32(text);//次数多了建议使用long
 }
 catch { }
 }
 Console.Write("please input a url:");
 string url = "http://www.baidu.com/";
 string temp = Console.ReadLine();
 if (!string.IsNullOrEmpty(temp))
 url = temp;
 Match mcom = new Regex(@"^(?i)http://(w+.){2,3}(com(.cn)?|cn|net)b").Match(url);//获取域名
 string com = mcom.Value;
 //Console.WriteLine(mcom.Value);
 Console.Write("please input a save path:");
 temp = Console.ReadLine();
 if (Directory.Exists(temp))
 path = temp;
 Console.WriteLine();
 WebClient client = new WebClient();
 byte[] htmlData = null;
 htmlData = client.DownloadData(url);
 MemoryStream mstream = new MemoryStream(htmlData);
 string html = "";
 using (StreamReader sr = new StreamReader(mstream))
 {
 html = sr.ReadToEnd();
 }
 Array urls = new MatchHtmlImageUrl().MatchHtml(html,com);
 foreach (string imageurl in urls)
 {
Console.WriteLine(imageurl);
byte[] imageData = null;
try
{
  imageData = client.DownloadData(imageurl);
}
catch { }
if (imageData != null && imageData.Length>0)
using (MemoryStream ms = new MemoryStream(imageData))
{
try
{
string ext = Aping.Utility.File.FileOpration.ExtendName(imageurl);
ImageFormat format = ImageFormat.Jpeg;
switch (ext)
{
case ".jpg":
format = ImageFormat.Jpeg;
break;
case ".bmp":
format = ImageFormat.Bmp;
break;
case ".png":
format = ImageFormat.Png;
break;
case ".gif":
format = ImageFormat.Gif;
break;
case ".ico":
format = ImageFormat.Icon;
break;
default:
continue;
}
Image image = new Bitmap(ms);
if (Directory.Exists(path))
   image.Save(path + "" + cursor + ext, format);
}
catch(Exception ex) { Console.WriteLine(ex.Message); }
}
 cursor++;
}
 mstream.Close();
 File.WriteAllText(countFile, cursor.ToString(), Encoding.UTF8);
 Console.WriteLine("take done...image count:"+(cursor-oldCount).ToString());
}
}