winform 利用线程 实现窗体图片轮播

之前做一个餐饮点餐系统，需要在主界面实现自定义的一些图片的轮播，起初使用定时器，但是当子窗体打开，主线程转移，图片轮播就停止了。

随之使用线程来实现，当时查阅不少博客，与之契合的较少。所以贴上自己的代码，供后来者多一份参考~

线程的使用需要注意： 1、开始时确认线程的调用状态。  2、程序结束、或功能完成后，判断线程状态，并关闭。

using System.Windows.Forms;using OrderFoodSystem.BLL;using System.Threading;namespace OrderFoodSystem{    public partial class FrmMain : Form    {        public FrmMain()        {            Form.CheckForIllegalCrossThreadCalls = false;       // 线程调用状态            InitializeComponent();        }        Thread t;        private void FrmMain_Load(object sender, EventArgs e) //FormLoad        {            t = new Thread(new ThreadStart(Runiamge));       //启动线程            t.Start();           foodInfoBLL fib = new foodInfoBLL();            List<Model.foodInfo> foodlist = fib.outfoodlist(1);            foreach (Control control in this.Controls)//遍历Form上的所有控件             {                if (control is PictureBox)                {                    PictureBox pb = (PictureBox)control;                    pb.AllowDrop = true;                }            }     #region  推荐菜品图片轮播的实现        public List<string> foodPhoto = new List<string>();     //声明一个list集合用来存放 需要轮播的图片路径        private void btnFoodRecom_Click(object sender, EventArgs e)   //添加推荐图片        {            //t = new Thread(new ThreadStart(Runiamge));            //t.Start();            foodInfoBLL fib = new foodInfoBLL();            List<Model.foodInfo> foodlist = fib.outfoodlist(1);            for (int i = 0; i < foodlist.Count; i++)            {                foodPhoto.Add(foodlist[i].FoodPhoto);            }            foreach (Control picbox in panel1.Controls)            {                if (picbox is PictureBox)                {                    PictureBox pic = (PictureBox)picbox;                    pic.SizeMode = PictureBoxSizeMode.StretchImage;                }            }        }        private void Runiamge()      //图片轮播        {            while (true)            {                for (int i = 0; i < foodPhoto.Count - 3; i++)                {                    //if (foodPhoto.Count == i - 3)                    //{                    //    i = 0;                    //}                    pictureBox1.Image = Image.FromFile(foodPhoto[i].ToString());                    pictureBox2.Image = Image.FromFile(foodPhoto[i + 1]);                    pictureBox3.Image = Image.FromFile(foodPhoto[i + 2]);                    Thread.Sleep(1500);                    pictureBox1.Image = null;                }            }        }   private void FrmMain_FormClosed(object sender, FormClosedEventArgs e)   //窗体关闭时结束线程        {            if (t.ThreadState == ThreadState.Running) //判断线程是否处于运行状态            {                t.Abort();            }        }        #endregion