工厂模式

 private void Form1_Load(object sender, EventArgs e)
        {
            //调用
            car p = dric.get("ben");
            string nam = p.drice();
            MessageBox.Show(nam);
        }

        /// <summary>
        /// 抽象
        /// </summary>

        public abstract class car
        {
            private String name;
            public abstract string drice();
            public string getname()
            {
                return name;
            }
         
        }
        /// <summary>
        ///车
        /// </summary>
        public    class  ben : car
        {
            public override string drice()
            {
                return "开始" + getname() + "-------go--";
            }
        }
        /// <summary>
        /// 工厂
        /// </summary>
        public class dric
        {
            public static car get(string name)
            {
                car c = null;
                if ("ben".Equals(name))
                    c = new ben();
                return c;
            }
        }