Question

I need to show some images periodically in a Windows form application. The source of the image is a fixed URL link. The image in the link is updated every day automatically. What I need is to make my application have the ability to refresh the image every day automatically. How can I do this in C++/CLI or C#? I would like to mention also that I have to pass through a proxy IP & port in order to access the Internet (the link).

Answer 1

Assuming its a picturebox:

private void PopulatePictureBox()
{
 ImageList images = new ImageList();
 images.Images.Add(LoadImage("http://www.website.com/123.jpg"));
 picbox.Image = imagelst.Images[0];
}

Assuming its a listView control:

private void PopulateListView()
{
    ImageList images = new ImageList();
    images.Images.Add(LoadImage("http://www.website.com/123.jpg"));
    images.Images.Add(LoadImage("http://www.website.com/456.jpg"));

    listView1.SmallImageList = images;
    listView1.Items.Add("An item", 0);
    listView1.Items.Add("Another item item", 1);
}

This the function to get the image from the web:

private Image LoadImage(string url)
{
    System.Net.WebRequest request =
        System.Net.WebRequest.Create(url);

    System.Net.WebResponse response = request.GetResponse();
    System.IO.Stream responseStream =
        response.GetResponseStream();

    Bitmap bmp = new Bitmap(responseStream);

    responseStream.Dispose();

    return bmp;
}

Not sure if you wish to save the picture to disk, I’ll leave that option up to you.