C# 逻辑运算符

       /// <summary>
        /// 2011-05-30 Geovin Du 逻辑运算符
        /// 涂聚文 缔友计算机信息技术有限公司
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            //1 &
            byte oddMask = 1;
            byte someByte = 85;
            bool isEven;
            isEven = (oddMask & someByte) == 0;
            Response.Write("位与运算符："+isEven.ToString()+"<br/>");//isEven is false
            //2 |
            byte option1 = 1;
            byte option2 = 2;
            byte totalOptions;
            totalOptions = (byte)(option1 | option2);
            Response.Write("位或运算符：" + totalOptions.ToString() + "<br/>");
            //3 ^
            byte invertMask = 255;
            byte someinvertByte = 240;
            byte inverse;
            inverse = (byte)(someinvertByte ^ invertMask);
            Response.Write("位异或运算符：" + inverse.ToString() + "<br/>");
            Response.Write(((int)inverse).ToString() + "<br/>");
            //4 &
            bool inStock = false;
            decimal price = 18.95m;
            bool buy;
            buy = inStock & (price < 20.00m);
            Response.Write("布尔与运算符：" + buy.ToString() + "<br/>");
            //5 |
            int mileage = 2305;
            int months = 4;
            bool changOil;
            changOil = mileage > 3000 | months > 3;
            Response.Write("布尔或运算符：" + changOil.ToString() + "<br/>");
            //6 ^
            bool availFlag = false;
            bool toggle = true;
            bool available;
            available = availFlag ^ toggle;
            Response.Write("布尔异或运算符：" + available.ToString() + "<br/>");
            //7. &&
            bool insStocks = false;
            decimal prices = 18.95m;
            bool buys;
            buys = insStocks && (prices < 20.00m);
            Response.Write("条件与运算符：" + buys.ToString() + "<br/>");
            //8. ||
            int meleage = 4305;
            int monthts = 4;
            bool changeoils;
            changeoils = meleage > 3000 || monthts > 3;
            Response.Write("条件或运算符：" + changeoils.ToString() + "<br/>");
            //9 副作用
            decimal totalSpending=3692.48m;            
            bool onBudget=totalSpending>4000.00m && totalSpending<CalsAvg();//方法
            Response.Write("副作用：" + onBudget.ToString() + "<br/>");
            //10 is 
            int i = 0;
            bool isTest = i is int;
            Response.Write("is 运算符：" + isTest.ToString() + "<br/>");
            //11 as
            //12 sizeof
            //13 typeof
            //14 checked
            //15 unchecked
            //三元运算符
            long democratVotes = 178888;
            long republicanVotes = 173343;
            string headline = democratVotes != republicanVotes ? "We Finally Have a Winner!" : recount();
            Response.Write("三元运算符：" + headline + "<br/>");

        }
        decimal avgSpending;
        private decimal CalsAvg()
        {
            return avgSpending=4002.00m;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        private string recount()
        {
            return "hello";
        }