c# - 如何从字符串中分离字符和数字部分

Question

例如，我想分开:

• OS234 到 OS 和 234
• AA4230 到 AA 和 4230

我使用了以下简单的解决方案，但我很确定应该有一个更有效和更强大的解决方案。

private void demo()
    {   string cell="ABCD4321";
        int a = getIndexofNumber(cell);
        string Numberpart = cell.Substring(a, cell.Length - a);
        row = Convert.ToInt32(rowpart);
        string Stringpart = cell.Substring(0, a);
    }

private int getIndexofNumber(string cell)
        {
            int a = -1, indexofNum = 10000;
            a = cell.IndexOf("0"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("1"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("2"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("3"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("4"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("5"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("6"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("7"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("8"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }
            a = cell.IndexOf("9"); if (a > -1) { if (indexofNum > a) { indexofNum = a; } }

            if (indexofNum != 10000)
            { return indexofNum; }
            else
            { return 0; }


        }

Answer 1

正则表达式最适合这种工作:

using System.Text.RegularExpressions;

Regex re = new Regex(@"([a-zA-Z]+)(\d+)");
Match result = re.Match(input);

string alphaPart = result.Groups[1].Value;
string numberPart = result.Groups[2].Value;