How to find default web browser using C#?

Question

Is there a way I can find out the name of my default web browser using C#? (Firefox, Google Chrome, etc..)

Can you please show me with an example?

Answer 1

WINDOWS 10

internal string GetSystemDefaultBrowser()
    {
        string name = string.Empty;
        RegistryKey regKey = null;

        try
        {
            var regDefault = Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\.htm\\UserChoice", false);
            var stringDefault = regDefault.GetValue("ProgId");

            regKey = Registry.ClassesRoot.OpenSubKey(stringDefault + "\\shell\\open\\command", false);
            name = regKey.GetValue(null).ToString().ToLower().Replace("" + (char)34, "");

            if (!name.EndsWith("exe"))
                name = name.Substring(0, name.LastIndexOf(".exe") + 4);

        }
        catch (Exception ex)
        {
            name = string.Format("ERROR: An exception of type: {0} occurred in method: {1} in the following module: {2}", ex.GetType(), ex.TargetSite, this.GetType());
        }
        finally
        {
            if (regKey != null)
                regKey.Close();
        }

        return name;
    }