代码片断:利用正则表达式替换文本中匹配的字符串
private string GetNewString(string str_old)
{
string str_new = string.Empty;
string pattern = @"http://www.mysite/blog/photo/\w+/\w+/[a-zA-z0-9_\-]+";
MatchCollection matchs = Regex.Matches(str_old, pattern);
foreach (Match match in matchs)
{
str_new = match.Value.Replace("www.mysite/blog/photo", "hr.mysite.com/blog");
str_new = str_new.Replace("o_", "w_");
str_old = str_old.Replace(match.Value, str_new);
}
return str_old;
}