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Editorial Team
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Asked: 2026-05-18T08:28:08+00:00

I can’t figure out why this simple lines of code simply doesn’t work: //

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I can’t figure out why this simple lines of code simply doesn’t work:

// Bulding tree
var declaration = new XDeclaration("1.0", "UTF-8", "yes");
var root = new XElement("root");

// Adding elements to document
var doc = new XDocument(declaration, root);

// Salve the stream
var stream = new MemoryStream();
doc.Save(stream);

// Update WebBrowser control
webBrowser1.DocumentStream = stream;
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1 Answer

  1. Editorial Team

    You’re saving to the stream, leaving the “cursor” positioned at the end… and then giving it to the browser, which I suspect is reading from the current location. Try adding:

    stream.Position = 0;

    just before the last line.

    EDIT: Okay, you say it’s not working… here’s a short but complete program which works for me. Try this and see if it works for you – and if it does, see if you can work out the difference between your code and this:

    using System;
using System.Drawing;
using System.IO;
using System.Text;
using System.Windows.Forms;

class Test
{
    [STAThread]
    static void Main()
    {
        Form form = new Form();
        WebBrowser browser = new WebBrowser();
        browser.Dock = DockStyle.Fill;
        form.Controls.Add(browser);
        form.Load += delegate { SetDocumentStream(browser); };

        Application.Run(form);
    }

    static void SetDocumentStream(WebBrowser browser)
    {
        string text = "<html><head><title>Stuff</title></head>" +
            "<body><h1>Hello</h1></body></html>";
        byte[] bytes = Encoding.UTF8.GetBytes(text);
        MemoryStream ms = new MemoryStream();
        ms.Write(bytes, 0, bytes.Length);
        ms.Position = 0;
        browser.DocumentStream = ms;
    }
}
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