namespace _10Picture和Timer小程序
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

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private void Form1_Load(object sender, EventArgs e)
    {
        //程序加载时播放音乐
        SoundPlayer sp = new SoundPlayer();
        sp.SoundLocation = @"C:\Users\Administrator.USER-20180925HC\Desktop\1.wav";
        sp.Play();
        //程序运行时加载图片到picBox
        pictureBox1.Image = Image.FromFile(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic\1.jpg");
        pictureBox2.Image = Image.FromFile(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic\2.jpg");
        pictureBox3.Image = Image.FromFile(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic\3.jpg");
        pictureBox4.Image = Image.FromFile(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic\4.jpg");
        pictureBox5.Image = Image.FromFile(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic\5.jpg");
        pictureBox6.Image = Image.FromFile(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic\6.jpg");
        //图片的显示方式
        pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox2.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox3.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox4.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox5.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox6.SizeMode = PictureBoxSizeMode.StretchImage;

    }
    string[] path = Directory.GetFiles(@"C:\Users\Administrator.USER-20180925HC\Desktop\pic");

    Random r = new Random();
    private void timer1_Tick(object sender, EventArgs e)
    {
        //每隔一秒钟换一张图片

        //开始赋值
        pictureBox1.Image = Image.FromFile(path[r.Next(0,path.Length)]);
        pictureBox2.Image = Image.FromFile(path[r.Next(0, path.Length)]);
        pictureBox3.Image = Image.FromFile(path[r.Next(0, path.Length)]);
        pictureBox4.Image = Image.FromFile(path[r.Next(0, path.Length)]);
        pictureBox5.Image = Image.FromFile(path[r.Next(0, path.Length)]);
        pictureBox6.Image = Image.FromFile(path[r.Next(0, path.Length)]);
    }
}

}

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网页题目：10.WinFor练习--自动播放图片小程序-创新互联
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