Overriding webBrowser click event

Question

Overriding webBrowser click event

I need information on what happens when a user clicks a hyperlink in a webBrowser control. I think it is calling a method .Navigate()

, but I'm not sure.

I created a wrapper method that wraps around the navigation method. What I want to do is that when the user clicks on a link or button or whatever, my method is called instead of the method .Navigate()

.

What do I need to achieve this?

thank

Edit: There seems to be some trouble understanding my question, let me try to rephrase:

I have created my own webBrowser control that inherits from WebBrowser. There is a method in my control that I use to navigate that goes through some steps before actually calling the navigate () method.

Now it's easy to call this method from my code, just call my method instead of .Navigate. But I want so that when the user clicks on a link on the page, my method gets triggered instead of .Navigate.

+3

c # winforms

TheGateKeeper 21 Mar 12 at 11:52

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5 answers

Reinaldo · Answer 1 · 2012-03-21T12:09:57+0000

No need to override, just attach an event handler to every link on the page in the WebBrowser.DocumentCompleted event.

private bool bCancel = false;

private void webBrowser_DocumentCompleted(object sender,
                                 WebBrowserDocumentCompletedEventArgs e)
{
  int i;
  for (i = 0; i < webBrowser.Document.Links.Count; i++)
  {
     webBrowser.Document.Links[i].Click += new    
                            HtmlElementEventHandler(this.LinkClick);
  }
}
private void LinkClick(object sender, System.EventArgs e)
{
  bCancel = true;
  MessageBox.Show("Link Was Clicked Navigation was Cancelled");
}
private void webBrowser_Navingating(object sender, 
                                WebBrowserNavigatingEventArgs e )
{
  if (bCancel == true)
  {
     e.Cancel=true;
     bCancel = false;
  }
}

Hope it helps!

EDIT:

If you would like to find more information about the link that was clicked, simply change the LinkClick event handler to something like this:

private void LinkClick(object sender, System.EventArgs e)
{
    HtmlElement element = ((HtmlElement)sender);
    string id = element.Id;
    string href = element.GetAttribute("href");

    bCancel = true;
    MessageBox.Show("Link Was Clicked Navigation was Cancelled");        
}

Hans Passant · Answer 2 · 2012-03-21T12:28:24+0000

Navigation event added. You can implement an event handler so that it rejects and redirects the navigation request:

    private void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e) {
        // Redirect expertsexchange to stackoverflow
        if (e.Url.ToString().Contains("experts-exchange")) {
           e.Cancel = true;
           webBrowser1.Navigate("http://stackoverflow.com");
        }
    }

SimpleVar · Answer 3 · 2012-03-21T12:00:33+0000

If I understand you correctly, then you are wrong.

Just view the HTML of the hyperlink. If it's a simple link, then it just goes to the navigation. If there is a script function call, then you can see what the function is doing.

tmjam · Answer 4 · 2012-03-21T12:02:57+0000

try doing it through JQuery

$('a').click(function(e){
    e.preventDefault();
    __doPostBack('functionForClick','');
});

Haven't tried this though.

Paul · Answer 5 · 2016-01-09T12:15:19+0000

You are all watching the event when the link is targeted at another window.

Suppose the link has target = "_ new", in this case the navigation event is never fired because it is a new web browser that actually opens the url.

Overriding webBrowser click event

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