Can't switch from application to desktop

Hi.

When I try to switch from an application window to the desktop window, I get the following error: OpenQA.Selenium.WebDriverException: 10010 is not a top level window handle

    [TestClass]
    public class UnitTest1
    {
        Uri winAppDriverUri = new Uri("http://127.0.0.1:4723/wd/hub");

        Process driverProcess = null;

        [TestInitialize]
        public void TestInitialize()
        {
            driverProcess = LaunchDriver(winAppDriverUri);
        }

        [TestCleanup]
        public void TestCleanup()
        {
            driverProcess?.Close();
        }

        [TestMethod]
        public void AppRoot() // this works and outputs the same window handle as the next test method
        {
            AppiumOptions options = new AppiumOptions();
            options.PlatformName = "Windows";
            options.AddAdditionalCapability("platformVersion", "1.0");
            options.AddAdditionalCapability("app", "Root");

            WindowsDriver<WindowsElement> driver = new WindowsDriver<WindowsElement>(winAppDriverUri, options);
            Console.WriteLine(driver.CurrentWindowHandle);
        }

        [TestMethod]
        public void SwitchToDesktop() // this fails with WebDriverException: 10010 is not a top level window handle
        {
            AppiumOptions options = new AppiumOptions();
            options.PlatformName = "Windows";
            options.AddAdditionalCapability("platformVersion", "1.0");
            options.AddAdditionalCapability("app", @"C:\Windows\System32\notepad.exe");

            WindowsDriver<WindowsElement> driver = new WindowsDriver<WindowsElement>(winAppDriverUri, options);

            IntPtr desktopWindowHandle = GetDesktopWindow();

            string desktopWindowHandleAsHex = desktopWindowHandle.ToInt32().ToString("x");

            Console.WriteLine(desktopWindowHandleAsHex);

            driver.SwitchTo().Window(desktopWindowHandleAsHex);
        }

        private Process LaunchDriver(Uri uri)
        {
            string exeFilePath = @"C:\Program Files (x86)\Windows Application Driver\WinAppDriver.exe";
            string commandLineArguments = $"{uri.Host} {uri.Port}{uri.PathAndQuery}";

            ProcessStartInfo processStartInfo = new ProcessStartInfo(
                exeFilePath,
                commandLineArguments)
            {
                CreateNoWindow = true,
                UseShellExecute = false
            };

            Process process = new Process()
            {
                StartInfo = processStartInfo
            };

            process.Start();

            return process;
        }

        [DllImport("user32.dll", EntryPoint = "GetDesktopWindow")]
        private static extern IntPtr GetDesktopWindow();
    }

Any ideas?

Thank you.

[Shabbir-Hossain]

Just found the solution of this problem. I’m just disgusted after knowing how easy the solution is!!!

I posted it on stackOverflow. You can check it out here

[Shabbir-Hossain]

Why they did not bother to answer the question Neh18 asked! Really disappointed for that. The whole internet is asking for the same problem that they are not able to switch to a top level window. But none, literally none is asking how to switch to a NonTopLevelWindow. I’m stuck on this issue and miraculously there seems to be no solution. Awesome!

BTW, Neh18, TheHlee did you guys find any solution for this problem?