浅试数据测试

         private bool checkstring(string ss)
        {
            string prr = "//D";                                      //定义正则表达式
            string[] cha = ss.Split('.');                            //分割传入的参数，如果有一个“.”说明是Float型
            if (cha.Length > 2)                                      //如果长度大于2说明包含有2个“.”有非法数字，返回
            {
                return false;
            }
            else
            {
                for (int i = 0; i < cha.Length; i++)            //遍历这个数组
                {
                    if (Regex.IsMatch(cha[i], prr))           //调用Regex类的IsMatch方法来匹配正则表达式
                    {
                        return false;                                        //如果有字母返回true;
                    }
                }
                return true;                                                   //返回false;
            }
        }