C# probe for and capture Javascript Alert() and Confirm()

Question

So I've been doing some research for a while and I'm at a dead end. I'm doing some IE automation. In C#/.NET, how do I probe for and consume a javascript alert() or confirm() so I can do things like grab its text and click the OK\Cancel buttons?

Update:

I need to reiterate: I need to be able to pull and verify the text from an alert() or confirm() as well as send it an OK or Cancel click. An example of such a test would be to make sure that, when I click on delete, the confirm() doesn't say "Are you sure you'd like to go to Mexico?" or anything else except the proper message.

Just in case, let me reiterate: For the purposes of this test, I have zero control over the source of the website in question.

Lastly, I'm using SHDocVw.InternetExplorer.

Answer 1

I think you're going to have to use FindWindow, SendMessage, etc. This is how WatiN does its dialog handling.

Answer 2

I think what you are looking for is the IDocHostshowUI COM interface. If I read the documentation correctly and my assumptions are correct ShowMessage function will be called when an alert() or confirm() is called in JavaScript.

I've not done this myself so I am only guessing. Here are some examples of someone showing an example of using that interface (and many others) in C#. WebBrowserSample2 sounds like what you are looking for.