C # design mode (2)--Simple Factory mode (Factory)

We create different objects with Factory.

For example, if you create an interface for a car, create an object that implements the interface through the Factory factory, and create different objects based on our choices.

Create a car interface

    /// <summary>    /// Simple Factory mode     /// </summary>     Public Interface Iautocarmake    {        //<summary>        /// Create a        car /// </summary>        void Createautocar ();    }

Create two derived classes, respectively, to create two types of cars with different colors

    /// <summary>    ///Red Car/// </summary>     Public class_redcar:iautocarmake { Public voidCreateautocar () {Console.WriteLine ("Create a red car"); }    }    /// <summary>    ///Blue Car/// </summary>     Public class_bluecar:iautocarmake { Public voidCreateautocar () {Console.WriteLine ("Create a blue car"); }    }

Generating different object instances from the factory class

    /// <summary>    ///Simple Factory mode-factory class/// </summary>     Public classFactory { PublicIautocarmake Createautocar (stringflag) {            Switch(flag) { Case "Red":                    return New_redcar ();  Case "Blue":                    return New_bluecar (); }            return NULL; }        Static voidMain (string[] args) {Iautocarmake Parents=NewFactory (). Createautocar ("Red"); Iautocarmake Parents=NewFactory (). Createautocar ("Blue"); Parents.            Createautocar ();        Console.readkey (); }    }

C # design mode (2)--Simple Factory mode (Factory)