求正则表达式替换

[mg_chen]

需要将number(12,3),
替换成number(12,3) ,
或将 number(12,3) not null,--
替换成 number(12,3) not null , --

即，前后有数字就算一个整体。不对逗号进行替换。否则就将","换成" , "

[sprc_lcl]

string str = "123,123asdf,sdf";
str = Regex.Replace(str, @"(?<!\d+),", " , ");

[兔子-顾问]

string s = @"需要将number(12,3),或将 number(12,3) not null,--";
string result = Regex.Replace(s, @"(?<![\d ]),(?!\d)", " ,");

[Peter200694013]

            string str = "number(12,3) not null,--";
            Regex reg = new Regex(@"(?<![0-9]),(?![0-9])");

            string res = reg.Replace(str, " , ");

            Console.WriteLine(res);

[mg_chen]

有效，给分
结贴