求一正则表达式

Question

从以下字符中提取出src=" "中的内容，谢谢~
<p></p><table border="0" cellspacing="6" cellpadding="0" width="200" align="center"><tbody><tr><td><p align="center"><img style="width: 500px; height: 335px" align="middle" src="upload/200912/25/001.jpg" width="500" height="335" /></p></td></tr><tr><td><p align="center"><img style="width: 500px; height: 369px" align="middle" src="upload/200912/25/2.jpg" width="500" height="369" /></p></td></tr><tr><td><p align="center"><img style="width: 500px; height: 335px" align="middle" src="upload/200912/25/1.jpg" width="500" height="335" /></p></td></tr></tbody></table><p></p><p></p><p></p><p></p><p style="text-align: left; line-height: 200%; layout-grid-mode: char" align="left"></p><p style="text-align: left; line-height: 200%; layout-grid-mode: char" align="left"><span style="line-height: 200%; font-family: 宋体; color: #003366; font-size: 14pt">&nbsp;&nbsp;&nbsp;&nbsp;2009</span><span style="line-height: 200%; font-family: 宋体; color: #003366; font-size: 14pt"></span></p><p style="text-align: left; line-height: 200%; layout-grid-mode: char" align="left"><span style="line-height: 200%; font-family: 宋体; color: #003366; font-size: 14pt">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="line-height: 200%; font-family: 宋体; color: #003366; font-size: 14pt"></span></p><p style="text-align: left; line-height: 200%; layout-grid-mode: char" align="left"></p><p style="text-align: left; line-height: 200%; layout-grid-mode: char" align="left"></p><p style="line-height: 200%; layout-grid-mode: char"></p><p style="line-height: 200%; layout-grid-mode: char"></p>

Answer 1

string test = @"<IMG src=""image/a.jpg"" border=0>
                <IMG src=""image/b.jpg"" border=0>
                <IMG src=""image/c.jpg"" border=0>";
StringBuilder sbImg = new StringBuilder();
MatchCollection mc = Regex.Matches(test, @"<img.*?src=""(?<img>[^""]*)""[^>]*>", RegexOptions.IgnoreCase);
foreach (Match m in mc)
{
    sbImg.Append(m.Groups["img"].Value);
    sbImg.Append(",");
}
string result = sbImg.ToString().TrimEnd(',');
MessageBox.Show(result);

Answer 2

麻烦再问一下wxr0323
如果把这些字符串替换了啊，谢谢