以一定的时间间隔将目录中的图像加载到图片框中

Question

任何人都可以帮助我以一定的时间间隔将图像从目录加载到图片框中。 例如：我在 \Picture 文件夹中有一些图像，如 1.jpg、2.jpg..等。 所以我的要求是遍历图片目录并将1.jpg加载到图片框然后等待5秒，然后将2.jpg加载到图片框。

Answer 1

string[] images = Directory.GetFiles(@"C:\Dir", "*.jpg");
foreach (string image in images)
{
  pictureBox1.Image = new Bitmap(image);
  Thread.Sleep(5000);
}

只需将此代码放入 BackgroundWorker doWork 事件中即可。 如果你想保留幻灯片 Allays 把它放在一个永远的 while 循环中

Answer 2

终于搞定了，希望对大家有帮助：

private void Form_Load(object sender, EventArgs e)
        {
            moveTimer.Interval = 1000;
            moveTimer.Tick += new EventHandler(moveTimer_Tick);
            moveTimer.Start();
        }
    private void moveTimer_Tick(object sender, System.EventArgs e)
            {
               string[] images = Directory.GetFiles(@"C:\Dir", "*.jpg");  
               image = Image.FromFile(images[counter]);
               pictureBox.Width = image.Width;
               pictureBox.Height = image.Height;
               pictureBox.Image = image;


                // Move Image to new location
                pictureBox.Left = rand.Next(Math.Max(0, Bounds.Width - pictureBox.Width));
                pictureBox.Top = rand.Next(Math.Max(0, Bounds.Height - pictureBox.Height));

                if (counter < images.Count - 1)
                {
                    counter = counter + 1;
                }
                else
                {
                    counter = 0;
                }
            }

Answer 3

加载到图片框中

var _with1 = openFileDialog1;

     _with1.Filter = ("Image Files |*.png; *.bmp; *.jpg;*.jpeg; *.gif;");
     _with1.FilterIndex = 4;
     //Reset the file name
     openFileDialog1.FileName = "";

     if (openFileDialog1.ShowDialog() == DialogResult.OK)
     {
       pictureBox2.Image = Image.FromFile(openFileDialog1.FileName);
     }

在 db 中插入该路径

try
     {
       con = new OleDbConnection(cs);
       con.Open();

       cmd = new OleDbCommand(cs);



       string cb = "insert into colorcodes(color,pic) VALUES ('" + colorcb.Text + "','" + openFileDialog1.FileName + "'  )";
       cmd = new OleDbCommand(cb);
       cmd.Connection = con;
       cmd.ExecuteNonQuery();
       con.Close();
       MessageBox.Show("image Saved Successfully");
     }

     catch (Exception ex)
     {
       MessageBox.Show(ex.Message);

     }

使用 image.location 从 db 再次显示在图片框中

 try
         {
           con = new OleDbConnection(cs);
           con.Open();
           cmd = new OleDbCommand("SELECT pic from  colorcodes where color= '" + colorcb.Text + "'  ", con);
           dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
           dr.Read();
           pictureBox2.ImageLocation = dr[0].ToString();
         }

         catch (Exception ex)
         {
           MessageBox.Show(ex.Message);
         }

Answer 4

Image[] imagecache;
    int cnt = 0;
    private void Form1_Load(object sender, EventArgs e)
    {
        // change dir with your image folder. or if you want to add formats you can add them with *.jpeg etc.
        string [] imageFiles = Directory.GetFiles(@"c:\dir", "*.png", SearchOption.AllDirectories);

        // cache files in folder
        imagecache = new Image[imageFiles.Length];
        for (int i = 0; i < imageFiles.Length; i++)
        {

            imagecache[i] = Image.FromFile(imageFiles[i]);
        }


        timer1.Interval = 3000;
        timer1.Tick += new EventHandler(timer1_Tick);
        timer1.Start();
    }
    public void timer1_Tick(object sender, EventArgs e)
    {
        picturebox.Image = null;
        picturebox.Image = imagecache[cnt];
        Application.DoEvents(); //to avoid memory leak in big files.

        cnt++;
        // if cnt exceeds files count, returns back to 0
        cnt = cnt % imagecache.Length;


    }