public static bool StringContains(string str1, string judgestr)
        {
            bool isExist = true;
            str1 = "," + str1 + ",";
            string[] strs = judgestr.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
            foreach (string strtemp in strs)
            {
                if (str1.IndexOf(',' + strtemp + ',') == -1)
                {
                    isExist = false;
                    break;
                }
            }
            return isExist;
        }
StringContains("1,2,3,4,5,6", "1,8");

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ms-help://MS.MSDNQTR.v80.chs/MS.MSDN.v80/MS.NETDEVFX.v20.chs/cpref2/html/M_System_DateTime_ToString.htm

------解决方案--------------------
inStr(s,"XX")函数

其中XX你可以循环遍历你要的字符

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探讨

C# codepublicstaticbool StringContains(string str1,string judgestr)
        {bool isExist=true;
            str1=","+ str1+",";string[] strs= judgestr.Split(newchar[] {',' }, StringSplitOptions.Remove¡­


------解决方案--------------------
C# code

C#中有一个叫Contains的方法

针对此题，你可以写s.Contains(a)或s.Contains(b)或s.Contains(c)
它返回的是一个Bool值，如果s中包含有a,b,c，则返回True，否则False