求一正则表达式

Question

本帖最后由 lshfong 于 2011-09-27 13:23:12 编辑

Answer 1

string strPatten="_p-([0-9]+)_t";string result = Regex.Replace("aaaaaa_p-1_ttttt",strPatten,"",RegexOptions.None);

Answer 2

string strPatten="_p-([0-9]+)_t";
string result = Regex.Replace("aaaaaa_p-1_ttttt",strPatten,"",RegexOptions.None);

Answer 3

string str = "aaaaaa_p-10_ttttt";
        string number = "12";
        string newstr = Regex.Replace(str, @"_p-(\d+)_t", "_p-"+number+"_t",RegexOptions.Singleline);
        Response.Write(newstr);

Answer 4

            string str = "aaaaaa_p-10_ttttt";
            string result = Regex.Replace(str,@"(?<=_p-)\d+(?=_t)", "12");
            Console.WriteLine(result);