很有意思的一段代码，代码实现对HTML内容中所有图片信息的提取，大家有时间的可以研究一下，完善一下程序。

protected ArrayList GetAList(string HtmlContent)
{
try
{
ArrayList arr = new ArrayList();
HtmlContent = content.Replace(\"\\r\\n\",\"\");
HtmlContent = content.Trim();

string partern = @\"\\<img(.*?)\\>\";//@\"<a (.*)>.*</a> \";//\"＜a.*(?=Headline)(.|\\n)*?\";//@\"/<a (.*)>.*<\\/\\a>/ \";

System.Text.RegularExpressions.Regex regex = new System.Text.RegularExpressions.Regex(partern, System.Text.RegularExpressions.RegexOptions.IgnoreCase);


System.Text.RegularExpressions.MatchCollection mc = regex.Matches(HtmlContent);

if(mc.Count <= 0)
return arr;
System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@\"(\'|\"\"|/)?[\\w_()]*(.jpg|.bmp|.gif|.png|.jpeg)\",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

foreach(Match m in mc)
{
System.Text.RegularExpressions.MatchCollection m2 = regex2.Matches(m.ToString());
if( m2.Count > 0 )
{
arr.Add( m2[0].ToString().Substring(1) );
}
}
return arr;

}
catch(Exception ex)
{
throw ex;
}

}