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Editorial Team
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Asked: 2026-05-28T05:53:15+00:00

this is inside my sample.html <html> <head> <title>Test</title> </head> <body> <div id=testingID>hello</div> </body> </html>

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this is inside my sample.html

<html>
    <head>
        <title>Test</title>    
    </head>
    <body>
        <div id="testingID">hello</div>
    </body>
</html>

and i have this code in c# that i want to prompt is the world “hello” inside the div element with the id testingID

private void btnGetData_Click(object sender, EventArgs e)
    {
        string url = string.Format("{0}/sample.html", Environment.CurrentDirectory);
        WebBrowser webb = new WebBrowser();

        webb.Navigate(url);

        var doc = webb.Document;
        HtmlElement elem = doc.GetElementById("testingID");
        MessageBox.Show(elem.InnerText);
    }

but i get Object reference not set to an instance of an object. on MessageBox.Show(elem.InnerText);

a little help here..

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1 Answer

  1. Editorial Team

    Probably, you are trying to access the element, but the document is not loaded at the moment. Move doc.GetElementById("testingID"); in WebBrowser.DocumentCompleted event and it should work.

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