WatiN: Confirmation Dialog Handler

An example of using the ConfirmDialogHandler:

using WatiN.Core;
using WatiN.Core.DialogHandlers;

[TestMethod()]
public void ConfirmOKTest()
{
    using (IE ie = new IE("http://localhost/confirmtest.htm"))
    {
        ConfirmDialogHandler handler = new ConfirmDialogHandler();
        using (new UseDialogOnce(ie.DialogWatcher, handler))
        {
            ie.Button("myButton1").ClickNoWait();
            handler.WaitUntilExists();
            handler.OKButton.Click();
        }
        ie.WaitForComplete();
        Assert.AreEqual("Clicked OK", ie.Button("myButton1").Text);
    }
}

Source: http://www.codeproject.com/KB/testing/WatiNConfirmDialogs.aspx