创建一个包含速度、模型和品牌的汽车类

在将（）添加到Car实例化后，我得到了一个新错误。上面写着：

"Car_Class_BBrantley.Form1.myCar（）"必须声明主体，因为它没有标记为抽象、外部或分部错误出现在第14行。

好吧，所以我的任务是创建一个显示3个主要功能的应用程序：年份、品牌和汽车速度。年份和品牌通过文本框输入，速度从0开始。

有一个加速按钮，每次按下速度都会增加5，还有一个制动按钮，每次按压速度都会减少5。

我在将类和窗体一起使用以显示结果时遇到问题。我需要在信息框中显示品牌、年份和速度。我已经在这里坐了好几个小时了，却一无所获。

我们非常感谢所有的帮助。如果这一团糟，我很抱歉。我以前从未与班级合作过。

这是表格：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Car_Class_BBrantley
{
    public partial class Form1 : Form
    {
        private Car myCar();
        public Form1()
        {
            myCar = new Car();
            InitializeComponent();
        }
        private void GetCarData(Car car)
        {
            try {
                myCar.Make = txtMake.Text;
                myCar.Year = int.Parse(txtModel.Text);
                myCar.Speed = 0;
            }
            catch (Exception ex)
            {
                MessageBox.Show(string.Concat("Must enter a valid make and year model for the car. ", ex.Message, "'r'n", ex.StackTrace));
            }
        }
        private void btnAcc_Click(object sender, EventArgs e)
        {
            GetCarData();
            myCar.AccSpeed(5);
            MessageBox.Show(" Your car is a " + myCar.Year + myCar.Make + " and it is     traveling " + myCar.Speed + " mph. ");
        }
        private void btnBrake_Click(object sender, EventArgs e)
        {
            GetCarData();
            myCar.DecSpeed(5);
            MessageBox.Show(" Your car is a " + myCar.Year + myCar.Make + " and it is     traveling " + myCar.Speed + " mph. ");
        }
    }
}

如果你想看看类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Car_Class_BBrantley
{
    class Car
    {
        private int year;
        private string make;
        private int speed;
        public Car()
        {
            this.year = 1994;
            this.make = "Ford";
            this.speed = 0;
        }
        public Car(string make, int year, int speed)
        {
            this.year = year;
            this.make = make;
            this.speed = speed;
        }
        public string Make
        {
            get { return make; }
            set { make = value; }
        }
        public int Year
        {
            get { return Year; }
            set { Year = value; }
        }
        public int Speed
        {
            get { return speed; }
            set { speed = value; }
        }
        public void AccSpeed(int speedIncrement)
        {
            //Add check for speed limit ranges
            Speed += speedIncrement;
        }
        public void DecSpeed(int speedDecrement)
        {
            //Add check for speed limit ranges
            Speed -= speedDecrement;
        }
    }
}

private Car myCar();

private Car myCar;

private void GetCarData(Car car)

private void GetCarData()

    myCar = new Car;  
to    myCar = new Car();