Click a <button> element in a webBrowser component

Question

Hello.

I have a WebBrowser component on a form. When the target page is navigated to, I need to click a <button> tag element in the WebBrowser's document. I can get the reference to the button fine, and even verify it's className attribute the following way:

 if (((HTMLButtonElementClass)(tE.DomElement)).className == "someClass")

{

//this is the  place where I need to click this button. However, ((HTMLButtonElementClass)(tE.DomElement)).click() doesn't works. 

//using tE.InvokeMember("click"); does nothing either. 

//What's the catch? 

}

Thanks in advance.

---

Max Pavlov

Answer 1

Try tE.RaiseEvent("OnClick") and see if that does it for you.

---

David Morton - http://blog.davemorton.net/

Answer 2

Nope, doesn't clicks the button. But surely, when I click it in the webBrowser itself, it works it's javascript background code fine. Also, when I look at the page source, I am unable to locate any javascript function linked to a button. It just looks like this:

<button class=class1 title="Hello world!"></button>

Maybe there is a way to see what is being executed when I click the button in browser? Like some external tool that will trace this even?

Thanks!

---

Max Pavlov

Answer 3

Check out FireBug or the IE Developer Toolbar.  This will allow you to view the properties of the specific button pretty easily, and may give you a clue as to what's going on. 

---

David Morton - http://blog.davemorton.net/

Answer 4

Hello again!

Here is the FireBug properties screenshot.

OnClick it says "function" prototype "undefined".

<img src="http://www.maxpavlov.com/image.axd?picture=buttonInfo.png" alt="" />

Let me know if there is some other info I should look in. Thank you for helping me on this one while you can =)

---

Max Pavlov

Answer 5

Hi,

You can use:

HtmlElementCollection hec = webBrowser1.Document.GetElementsByTagName("button");

foreach (HtmlElement he in hec)

{

if (he.InnerText.Equals("Option1"))

{

he.InvokeMember("click");

}

}

I assumed you have a webBrowser  named webBrowser1 and the name of the button is "Option1".

Beside Innertext ,you can also use id,name,location ...to specify the button.

You can also use 'webBrowser1.Document.GetElementById();' to get button if you know the button id.

Best regards,
Harry

Answer 6

Hello, Harry.

As mentioned in the first post in this thread,

//using tE.InvokeMember("click"); does nothing either.

I am completely able to locate my button in webBrowserDocument and have it's variable as  HTMLButtonElementClass. I have access to all the properties, but I don't know how to click it from code.

I have tried clicking the button using 3 of the following approaches:

((HTMLButtonElementClass)(tE.DomElement)).click()

tE.InvokeMember("click"); Where tE is a variable of HTMLElement class

tE.RaiseEvent("OnClick")

None of these above doesn't work.

At this point I need a program that will tell me, what event is being raised, when I actually do click it in the WebBrowser control.

Thanks for the effort, the problem is still there.

---

Max Pavlov

Answer 7

Hi,

Could you show us how do you get the button ?It seems that you just post the code how do you call the button.

Best regards,
Harry