利用C# 保存图片

hihi小弟也好寄研究了一下
一般如果找網頁圖片，好像用flashget或是直接網頁另存(kkman)，就可把網頁資料下載下來
透過程式，比較常用的作法是
讀取網頁
解析html，取得img的Tag
然後將img下載到你要的目錄下
下面是簡單寫的範例，臨時寫的，可能很多問題(謹供參考)
參考看看喔^^

1	public class MyImgObj
2	{
3	public string SrcUrl;
4	public string ImgSavePath;
5	}
6	private void button1_Click(object sender, EventArgs e)
7	{
8
9	//讀取網頁 html
10	WebClient wc = new WebClient();
11	byte[] aryByte = wc.DownloadData("http://www.blueshop.com.tw/board/FUM20050124192253INM/BRD20100129155902S4A.html");
12	MemoryStream ms = new MemoryStream(aryByte);
13	string html = string.Empty;
14	using (StreamReader sr = new StreamReader(ms, Encoding.Default))
15	{
16	html = sr.ReadToEnd();
17	}
18
19	List<MyImgObj> listMyImgObj = new List<MyImgObj>();
20	FolderBrowserDialog folderBsd = new FolderBrowserDialog();
21	if (folderBsd.ShowDialog() == DialogResult.OK)
22	{
23	string urlRoot = "http://www.blueshop.com.tw";
24	Regex regex = new Regex(@"<(.|\n)*?>"); //取 HTML tag
25	Regex regexImgSrc = new Regex("src=\"[^\"]*\""); //取 img src
26
27	List<string> listTag = new List<string>();
28	List<string> listImgUrl = new List<string>();
29	foreach (Match m in regex.Matches(html))
30	{
31
32	string tag = m.Value;
33	tag = tag.Replace("'", "\"");
34
35	if (tag.ToLower().IndexOf("<img") != -1)
36	{
37	if (!listTag.Contains(tag))
38	{
39	listTag.Add(tag);
40	if (regexImgSrc.IsMatch(tag))
41	{
42	MyImgObj myImgObj = new MyImgObj();
43	string imgSrc = regexImgSrc.Match(tag).Value.Replace("src=\"", String.Empty).Replace("\"", String.Empty);
44	myImgObj.SrcUrl = urlRoot + imgSrc;
45	myImgObj.ImgSavePath = folderBsd.SelectedPath + "\\" + imgSrc.Substring(imgSrc.LastIndexOf("/") + 1);
46	if (myImgObj.ImgSavePath.IndexOf(".") == -1) { myImgObj.ImgSavePath = myImgObj.ImgSavePath + ".jpg"; }
47	listMyImgObj.Add(myImgObj);
48	}
49	}
50	}
51
52	}
53	}
54
55	//存取所有 img 的src
56	foreach (MyImgObj myImgObj in listMyImgObj)
57	{
58	try
59	{
60	ms = new MemoryStream(wc.DownloadData(myImgObj.SrcUrl));
61	Image img = Image.FromStream(ms);
62	img.Save(myImgObj.ImgSavePath);
63	}
64	catch (Exception ex)
65	{
66	//MessageBox.Show(ex.Message + myImgObj.SrcUrl);
67	}
68	}
69
70	MessageBox.Show("讀取完成!");
71
72	}