C#委托初级使用的实例代码

delegate double processdelegate(double param1, double param2);

        static double muliply(double param1, double param2)
        {
            return param1 * param2;       
        }

        static double divide(double param1, double param2)
        {
            return param1 / param2;
        }

        static void main(string[] args)
        {
            processdelegate process;
            console.writeline("enter 2 numbers separated with a comma:");
            string input = console.readline();
            int commapos = input.indexof(",");
            double param1 = convert.todouble(input.substring(0,commapos));
            double param2 = convert.todouble(input.substring(commapos+1,input.length -commapos -1));
            console.writeline("enter m to multiply or d to divide:");
            input = console.readline();
            if (input.equals("m"))
            {
                process = new processdelegate(muliply);
            }
            else {
                process = new processdelegate(divide);
            }
            console.writeline("result: {0}",process(param1,param2));
            console.readkey();
        }