How to take screenshots for UI element?

[Gintaras]

Code:

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// script "Capture brand logos.cs"
//https://brandirectory.com/rankings/global/table

print.clear();
filesystem.createDirectory(@"C:\Test\logo");

var w = wnd.find(0, "Global 500 2023 | Brand Value Ranking League Table | Brandirectory - Google Chrome", "Chrome_WidgetWin_1");
w.Activate();
keys.send("Ctrl+Home");
500.ms();

using var ci = new CaptureScreenImage();
for (int i = 2; i < 500; i++) {
    gRetry:
    var e = w.Elm["web:DOCUMENT", navig: $"fi3 ch5 fi3 ch{i} ch3 fi3"].Find(1);
    ci.Capture(e.Rect);
    
    var a = ci.ToArray2D();
    if (a[ci.Height - 1, 0] == 0xFF000000) { //if the bottom-left pixel is black
        //print.it(i);
        //scroll to the next element, because Chrome does not scroll to this element if it is partially visible
        e = w.Elm["web:DOCUMENT", navig: $"fi3 ch5 fi3 ch{i + 1} ch3 fi3"].Find(1);
        e.ScrollTo();
        50.ms();
        goto gRetry;
    }
    
    using var bitmap = ci.ToBitmap();
    var ms = new MemoryStream();
    bitmap.Save($@"C:\Test\logo/{e.Name.Split("/")[0]}.png");
    bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
    print.it($"<><image \"image:{Convert.ToBase64String(ms.ToArray())}\">");
}
ScriptEditor.ShowMainWindow(true);

//Several times noticed 1 or several white or almost white images captured.

//Once Chrome UI elements stopped working. Restart Chrome.