Get Size image from link

Question

I want to check size image from url in C#.

Ex: Url: http://img.khoahoc.tv/photos/image/2015/05/14/hang_13.jpg

Answer 1

Download and check:

string image = @"http://img.khoahoc.tv/photos/image/2015/05/14/hang_13.jpg";
byte[] imageData = new WebClient().DownloadData(image);
MemoryStream imgStream = new MemoryStream(imageData);
Image img = Image.FromStream(imgStream);

int wSize = img.Width;
int hSize = img.Height;

Answer 2

HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(@"http://img.khoahoc.tv/photos/image/2015/05/14/hang_13.jpg";);

HttpWebResponse response = (HttpWebResponse)req.GetResponse();

Stream stream = response.GetResponseStream();

Image img = Image.FromStream(stream);

stream.Close();

MessageBox.Show("Height: " + img.Height + " Width: " + img.Width);

Answer 3

For optimization, I suggest to use @Backs answer with async/await to download the image:

public async Task<Size> GetImageSizeFromUrl(string url)
{
    var imageData = await new System.Net.WebClient().DownloadDataTaskAsync(url);
    var imgStream = new MemoryStream(imageData);
    var img = System.Drawing.Image.FromStream(imgStream);

    return new Size(img.Width, img.Height);
}