在图像控制中以 5 秒时间间隔显示文件夹中的所有图像

我有一个包含 1000 张图像的文件夹，图像名称的顺序为“ICON000、ICON001 直到 ICON 999”。我需要它们以 5 秒的时间延迟按顺序显示在我的 WPF 图像控件中。我使用文件对话框来获取特定文件夹的路径和图像的相应前缀（图标）。我使用了下面的代码

string path = null;
string selected_file;
string URI;`enter code here`
openfile.AddExtension = true;
openfile.Filter = "GIF(*.gif)|*.gif|PNG(*.png)|*.png|JPG(*.jpg)|*.jpg|JPEG(*.jpeg)|*.jpeg";
DialogResult result = openfile.ShowDialog();
if (result.ToString() == "OK")
{
selected_file = openfile.FileName;
 Uri uri_temp = new Uri(selected_file);
URI = uri_temp.AbsoluteUri;

 string[] ext = URI.Split('.');
 //textBox1.Text = ext[0];

 string[] ss = ext[0].Split('/');
 int a = ss.Length;

string a1 = ss[a - 1];

string image_prefix = a1.Substring(0, 4);
   string image_no = a1.Substring(4, 3);
   for (int i = 0; i < a-1; i++)
    {
        path = path + ss[i] + "/";
     }
  string path1 = path;

     path = path1 + image_prefix + image_no + "." + ext[1];

   for (int i = 1; i < 999; i++)
    {
        if (i < 10)
       {
           image_no = "00" + i;
        }
       else if (i < 100)
      {
           image_no = "0" + i;
         }
         else
        {
              image_no = i.ToString();
          }
          path = path1 + image_prefix + image_no + "." + ext[1];
           string dasdasd = path;

         string loc = new Uri(path).LocalPath;
           bool asasa = File.Exists(loc);
       if (asasa == true)
          {      System.Threading.Thread.Sleep(5000);
                image1.Source = new BitmapImage(new Uri(dasdasd));
           }
             else
             {
                System.Windows.Forms.MessageBox.Show("File not found");
         }

但图像没有显示。做需要的事情....！！

Use a 调度定时器 http://msdn.microsoft.com/en-us/library/system.windows.threading.dispatchertimer.aspx更新当前显示的图像。

private DispatcherTimer timer = new DispatcherTimer();
private int imageIndex;
private int maxImageIndex;

public MainWindow()
{
    InitializeComponent();
    timer.Tick += TimerTick;
}

private void StartSlideShow(TimeSpan interval, int maxIndex)
{
    imageIndex = 0;
    maxImageIndex = maxIndex;

    timer.Interval = interval;
    timer.Start();
}

private void TimerTick(object sender, EventArgs e)
{
    image.Source = new BitmapImage(new Uri(CreatePath(imageIndex)));

    if (++imageIndex >= maxImageIndex)
    {
        ((DispatcherTimer)sender).Stop();
    }
}

private string CreatePath(int index)
{
    // create image file path from index
    // ...
}

例如通过调用开始显示图像

StartSlideShow(TimeSpan.FromSeconds(5), 1000);