指定字符串长度，并对多余的填充

　　　　 string name1 = string.Format("{0,-8}","args"); //负号左对齐，8表示长度
         string name2 = string.Format("{0,-8}","bill");
            string name3 = string.Format("{0,-8}","martian");
            string name4 = string.Format("{0,-8}","tool");
            string name5 = "Zone";
            string name6 = "praog";

            Console.WriteLine("{0,-8}{1,-8}", "bill", "Cake");
            Console.WriteLine("_________________");
            Console.WriteLine(name1+name2);
            Console.WriteLine(name3 + name4);
            Console.WriteLine(name5.PadRight(8) + name6.PadRight(8,'#'));   //PadRight右填充 ，指定填充字符'#'