代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using System.Threading;

namespace picture_0
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

Thread th;
private void Form1_Load(object sender, EventArgs e)
{
th = new Thread
(
delegate ()
{

                     for (int i = ; i < ; i++)  
                     {

                         ChangeImage(Image.FromFile(@"picture\\18720223738\_6b6c58f282\_o.jpg"), );  
                         ChangeImage(Image.FromFile(@"picture\\amargosa-river-stars.jpg"), );

                     }  
                 }  
             );  
         th.IsBackground = true;  
         th.Start();

     }

  private void Form1\_FormClosed(object sender, FormClosedEventArgs e)  
     {  
         th.Abort();//结束线程  
     }

     private void ChangeImage(Image img, int millisecondsTimeOut)  
     {  
         this.Invoke(new Action(() =>  
         {  
             pictureBox1.Image = img;  
         })  
             );  
         Thread.Sleep(millisecondsTimeOut);

     }

 }  

}

代码