Data Types C#

using System;
using System.Data;
class Class1{
        static void Main(string[] args){
            int number = 25;
            short num = 25;
            Console.WriteLine(GetMSB(number));
            Console.WriteLine(GetConvertMSB(number));
            Console.WriteLine(GetLSB(number));
            Console.WriteLine(GetConvertLSB(number));
            Console.WriteLine(GetMSB(num));
            Console.WriteLine(GetLSB(num));
        }
        public static int GetMSB(int value)
        {
            return (int)(value & 0xFFFF0000);
        }
        public static int GetConvertMSB(int value)
        {
            return (value & Convert.ToInt32("11111111111111110000000000000000", 2));
        }
        public static int GetLSB(int intValue)
        {
            return (intValue & 0x0000FFFF);
        }
        public static int GetConvertLSB(int intValue)
        {
            return (intValue & Convert.ToInt32("11111111111111110000000000000000", 2));
        }
        
        public static int GetMSB(short intValue)
        {
            return (intValue & 0xFF00);
        }
        public static int GetLSB(short intValue)
        {
            return (intValue & 0x00FF);
        }
}