c# - 如何为表单应用程序中的所有实例仅调用一次 Method DriveMe() 或 color() 以减少重复。 C#

Question

表单有 4 个单选按钮和 2 个按钮。我可以选择 VehicleType 并单击按钮(代表方法)以显示所选车辆的属性。我想为所有 if else 条件调用 DriveMe() 和 color() 方法，但只调用一次。有什么方法可以替换 IF ELSE 来实现这一点。

namespace vehicles
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {

        }
        public class vehicle
        {
             public string _VehicleType;
            public string VehicleType { get; set; }
            public string Vehiclecolor { get; set; }
           public virtual void DriveMe()
            {              
                MessageBox.Show(VehicleType);               
            }
            public virtual void color()
            {
                MessageBox.Show(Vehiclecolor);
            }
        }
        public class car : vehicle
        {           

        }
        public class truck: vehicle
        {

        }
        public class bike : vehicle
        {

        }
        public class train : vehicle
        {

        }    

       private void button1_Click_1(object sender, EventArgs e)
        {                
            if (radioButton1.Checked == true)
            {
                car v = new car();
                v.VehicleType = "Nissan Murano 2007";
                v.DriveMe();
            }
            else if (radioButton2.Checked == true)
            {
                truck v = new truck();
                v.VehicleType = "Dodge Truck";
                v.DriveMe();
            }
            else if (radioButton3.Checked == true)
            {
                bike v = new bike();
                v.VehicleType = "Hardley Davidson Bike";
                v.DriveMe();
            }
            else if (radioButton4.Checked == true)
            {
                train v = new train();
                v.VehicleType = "Train";
                v.DriveMe();
            }
            else
            {
                vehicle v = new vehicle();
                v.VehicleType = "Please Select the Vehicle Type";
                v.DriveMe();
            }          
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
            {
                car v = new car();
                v.Vehiclecolor = "Black";
                v.color();
            }
            else if (radioButton2.Checked == true)
            {
                truck v = new truck();
                v.Vehiclecolor = "White";
                v.color();
            }
            else if (radioButton3.Checked == true)
            {
                bike v = new bike();
                v.Vehiclecolor = "Red";
                v.color();
            }
            else if (radioButton4.Checked == true)
            {
                train v = new train();
                v.Vehiclecolor = "Blue";
                v.color();
            }               
            else
            {
                vehicle v = new vehicle();
                v.Vehiclecolor = "Please Select the Vehicle Type";
                v.color();                
            }

        }

    }

}

Answer 1

由于您的所有类都继承自 vehicle，因此您可以稍微简化您的代码。 DriveMe() 和 color() 是在基类上定义的，因此它可用于所有更多的派生类。

private void button2_Click(object sender, EventArgs e)
{
    vehicle v = null;

    if (radioButton1.Checked == true)
    {
        v = new car();
        v.Vehiclecolor = "Black";
    }
    else if (radioButton2.Checked == true)
    {
        v = new truck();
        v.Vehiclecolor = "White";
    }
    else if (radioButton3.Checked == true)
    {
        v = new bike();
        v.Vehiclecolor = "Red";
    }
    else if (radioButton4.Checked == true)
    {
        v = new train();
        v.Vehiclecolor = "Blue";
    }               
    else
    {
        v = new vehicle();
        v.Vehiclecolor = "Please Select the Vehicle Type";               
    }

    v.color();
}

您的其他函数可以用类似的方式重写。