C#拆分中文和数字字符串

 private string GetStrings(string str,int type=0)
        {
            IList<string> strList = new List<string>();
            MatchCollection ms;
            if (type == 0)
            {
                ms = Regex.Matches(str, @"\D+"); 
            }
            else
            {
                ms = Regex.Matches(str, @"\d+");
            }
          
            foreach (Match m in ms)
            {
                strList.Add(m.Value);
            }
            return string.Join("",strList.ToArray());
        }