Using polymorphic to achieve USB, MP3, mobile hard disk and computer docking, read write data.

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespaceMulti-state analog mobile HDD and u disk {classProgram {Static voidMain (string[] args) {            //using polymorphic to achieve USB, MP3, mobile hard disk and computer docking, read write data. Mobiletool MT =NewUdisk (); Computer CPU=Newcomputer (); Cpu.            Cpuread (MT); Cpu.            Cpuwrite (MT);        Console.readkey (); }        /// <summary>        ///the abstract parent class/// </summary>         Public Abstract classMobiletool { Public Abstract voidRead ();  Public  Abstract voidWrite (); }         Public classUdisk:mobiletool { Public Override voidRead () {Console.WriteLine ("USB Stick Read Success"); }             Public Override voidWrite () {Console.WriteLine ("USB Drive Write Success"); }        }         Public classMp3disk:mobiletool { Public Override voidRead () {Console.WriteLine ("MP3 Read Success"); }             Public Override  voidWrite () {Console.WriteLine ("Mp3 Write Success"); }             Public voidPlaymuisc () {Console.WriteLine ("Mp3 can play music himself"); }        }         Public classMobiledisk:mobiletool { Public Override voidRead () {Console.WriteLine ("Mobile Hard disk read Success"); }             Public Override voidWrite () {Console.WriteLine ("Mobile Hard Disk write success"); }        }         Public classComputer { Public voidCpuread (Mobiletool mt) {Mt.             Read (); }             Public voidCpuwrite (Mobiletool mt) {Mt.            Read (); }        }    }}

There are several ways to crawl a parent class in computer: You can pass a parameter fetch in a method, either through a constructor or through a property.

 Static voidMain (string[] args) {Mobiletool MT=NewUdisk (); Computer CPU=Newcomputer (); Cpu. Mt=MT; Cpu.            Cpuread (); Cpu.            Cpuwrite ();        Console.readkey (); }      Public classComputer {PrivateMobiletool _MT; InternalMobiletool Mt {Get{return_MT;} Set{_MT =value;} }             Public voidCpuread () {mt.read (); }             Public voidCpuwrite () {mt.read ();

Using polymorphic to achieve USB, MP3, mobile hard disk and computer docking, read write data.