local html with javascript file to image

Question

i have local file that contain some html with javascript and i want to capture it and save it as an image.

i tried to do it with WebBrowser:

            WebBrowser browser = new WebBrowser();
            browser.Navigate("C:\\charts\\pie.html");
            HtmlDocument doc = browser.Document;
            Bitmap bitmap = GenerateScreenshot(browser);
            bitmap.Save("c:\\charts\\sample.png");


        public static Bitmap GenerateScreenshot(WebBrowser wb)
        {
            wb.ScrollBarsEnabled = false;
            wb.ScriptErrorsSuppressed = true;

            Bitmap bitmap = new Bitmap(wb.Width, wb.Height);
            wb.DrawToBitmap(bitmap, new Rectangle(0, 0, wb.Width, wb.Height));
            wb.Dispose();

            return bitmap;
        }

but i get every time blank image...

any idea??

On moment of returning bitmap is it null or not? – Dmitriy Kovalenko Jul 08 '16 at 10:42 — Dmitriy Kovalenko, Jul 08 '16 at 10:42
its nut null. but maybe its empty. how can i know? – Nir Diamant Jul 08 '16 at 10:46 — Nir Diamant, Jul 08 '16 at 10:46

score 0 · Answer 1 · edited May 23 '17 at 11:44

0

DrawToBitmap has limitations and dont always work as expected. Try instead work with native GDI+

As Cory already answered here

Refer another example here

edited May 23 '17 at 11:44

Community

1
1

answered Jul 08 '16 at 10:45

Vignesh Kumar A

27,863
13
63
115

local html with javascript file to image

1 Answers1