download.cs

using Leaf.xNet;

public static Bitmap XNetDownload(string url)
{
    try
    {
        var request = new HttpRequest();
        request.UserAgentRandomize();
        var response = request.Get(url);
        if (response.IsOK)
        {
            var mem = response.ToMemoryStream();
            var image = new Bitmap(mem);
            return image;
        }
        return null;
    }
    catch (Exception)
    {
        return null;
    }
}