/// <summary>
/// 获取网页内容的图片地址
/// </summary>
/// <param name="html">要传入的html文档</param>
/// <returns></returns>
private void PickupImgUrl(string html)
{
Regex regImg = new Regex(@"<img\b[^<>]*?\bsrc[\s\t\r\n]*=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<imgUrl>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>", RegexOptions.IgnoreCase);
MatchCollection matches = regImg.Matches(html);
if (ImagePath == null)
{
ImagePath = new List <string>();
}
foreach (Match match in matches)
{
ImagePath.Add(match.Groups["imgUrl"].Value);
}
}