C#怎么把一串字符串每隔两个用空格分开

[XL627957378]

比如说12345678 怎么分成12 34 56 78

[xuzuning]

抛砖引玉

            string txt = "12345678";
            var s = string.Join(" ", Regex.Matches(txt, @"..").Cast<Match>().ToList());

[XL627957378]

没看懂、什么意思 而且CODE不能用。、

[文盲老顾]

string txt = "12345678"; string result = Regex.Replace(txt,@"(\d{2})","$1 ");

[文盲老顾]

string txt = "12345678"; string result = Regex.Replace(txt,@"(\d{2}(?!$))","$1 "); // 修改成最后两个数字后不加空格

[娃都会打酱油了]

string txt = "12345678";
string result = Regex.Replace(txt,@".{2}","$0 ");

我就把上面的抄一下改一下

[ouylvr]

string strNum = string.Empty; string strNums = “123456”; strNum = string.Join("-", Regex.Matches(strNums, @"..").Cast<Match>().ToList()); MessageBox.Show(strNum); 输出 12-34-56