WatiN and .net winforms WebBrowser control - is DialogWatcher possible?

Question

Our target is: Watin-enabled browser testing embedded in a .net winform.

Currently, we are using a .net WebBrowser control to embed browser behavior in a winform. We

Answer 1

I have just upgraded to newest version of WatiN (head revision - 1166 - in trunk: https://watin.svn.sourceforge.net/svnroot/watin/trunk/src/). Since there was a change in original DialogWatcher class it is now possible to use existing DialogWatcher with fewer code.

Create class:

public class WebBrowserIE : IE
{
    private IntPtr hwnd;

    public WebBrowserIE(WebBrowser webBrowserControl)
        : base(webBrowserControl.ActiveXInstance, false)
    {
        hwnd = webBrowserControl.FindForm().Handle;
        StartDialogWatcher();
    }

    public override IntPtr hWnd
    {
        get
        {
            return hwnd;
        }
    }

    protected override void Dispose(bool disposing)
    {
        hwnd = IntPtr.Zero;
        base.Dispose(disposing);
    }
}

Use it instead of original IE class and see disappearing javascript alert dialog:

var ie = new WebBrowserIE(webBrowser1);
var thread = new Thread(() =>
{
    ie.GoTo("http://www.plus2net.com/javascript_tutorial/window-alert.php");
    ie.Button(Find.ByValue("Click here to display alert message")).Click();
});
thread.SetApartmentState(ApartmentState.STA);
thread.Start();

Warning: Create WebBrowserIE instance outside the thread. Otherwise you will have to modify this class to avoid cross-thread operation when reading Handle property of Form.