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