C#里分割字符串的一个方法

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class StringExtention {

    public static string[] SplitWithString(string sourceString, string splitString){
        
        List<string> arrayList = new List<string>();
        string s = string.Empty;
        while (sourceString.IndexOf(splitString) > -1)
        {
            s = sourceString.Substring(0, sourceString.IndexOf(splitString));
            sourceString = sourceString.Substring(sourceString.IndexOf(splitString) + splitString.Length);
            arrayList.Add(s);
        }
        arrayList.Add(sourceString);
        return arrayList.ToArray();
    }
}

例如 字符串 string str = "abc1234efg";

StringExtention.SplitWithString(str,"1234"); 得到的两个字符串为 “abc” , "efg"。