Wait for webBrowser to finish loading the page

Question

3.00/5 (1 vote)

See more:

Hi !

I have a problem.

I use the webbrowser class to login to a place.
After I have logged into the site, I want to visit a link.

The problem is when I have logged into the place, it won´t visit the link. If I show an messagebox after logged in and before I visit the link, it works.

The Code:

C#

//For login: 

webBrowser3.Document.GetElementsByTagName("input")[1].InnerText = "password";
            webBrowser3.Document.GetElementsByTagName("input")[0].InnerText = "username";
                       
webBrowser3.Document.GetElementById("selection").Focus();
            SendKeys.Send("{DOWN}");
            SendKeys.Send("{TAB}");
         SendKeys.Send("{Enter}");
//After this I being logged into the site


//After login
while (webBrowser3.ReadyState != WebBrowserReadyState.Interactive) Application.DoEvents();
         {
             Application.DoEvents();
         }

webBrowser3.Document.Links[15].InvokeMember("click");
//Clicking the link.

//If I put in a messagebox before the last link, I can visit the link, otherwise I dont get logged in, its like the webbrowser hasn´t finished loading the page.

Regards Joakim

Posted 1-Mar-11 1:34am

!Kerish11

Updated 1-Mar-11 1:39am

Sunasara Imdadhusen

v2

Add a Solution

Comments

Sunasara Imdadhusen 1-Mar-11 7:39am

Applied code formatting!!

!Kerish11 1-Mar-11 7:52am

Sorry about that, my first time posting a question.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Albin Abel · Answer 1 · 2011-03-01T03:13:00

Solution 1

After you send keys, set a global variable say bool login_initiated=true;

Handle the link click invocation in the document completed event..

you need to add a event handler on some event like form load etc.

webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);

C#

protected void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    if (login_initiated == true)
    {
        webBrowser3.Document.Links[15].InvokeMember("click");
    }
}

Posted 1-Mar-11 3:13am

Albin Abel

Comments

Sandeep Mewara 1-Mar-11 9:19am

Good answer... 5!

!Kerish11 1-Mar-11 9:26am

Thank you alot. It works perfectly !.

Albin Abel 1-Mar-11 9:38am

Thanks Sandeep.
You are welcome Kerish

!Kerish11 1-Mar-11 10:07am

I might be stupid. After I press the link, I want to continue to another page from there, how can I do that ? I want to use something like "webBrowser1.Document.GetElementsByTagName("input")[1].InvokeMember("click");"

Albin Abel 1-Mar-11 10:25am

I assume just the chaining of events. The same way after execute the hyperlink click set a variable say loading_second_page=true. Again in the document completed event handler check for this boolean, if true then execute your button click. So setting a global variable and document completed events chaining. So here instead of using IF you can use case statements.

Also instead of using select by tag and the index, why don't use select by ID?. Because the index are easy changeable in a website under modification

!Kerish11 1-Mar-11 10:36am

Yeah, but problem is that you are clicking the link in the document completed event.
So the code be something like this " if (login_initiated == true) { webBrowser3.Document.Links[15].InvokeMember("click"); loading_second_page=true; }

if (loading_second_page==true) {

webBrowser1.Document.GetElementsByTagName("input")[1].InvokeMember("click");
// webBrowser3.Document.GetElementsByTagName("input")[1].InvokeMember("click");
}"

And then it doesn´t work.

!Kerish11 1-Mar-11 10:43am

Sorry... I write the code again.

if (login_initiated == true) { webBrowser3.Document.Links[15].InvokeMember("click"); loading_second_page=true; login_initiated = false; }

if (loading_second_page==true) {

webBrowser3.Document.GetElementsByTagName("input")[1].InvokeMember("click");
}

!Kerish11 1-Mar-11 10:46am

I worked it out, be its not a fancy solution:

if (loading_second_page==true) {

try
{
webBrowser3.Document.GetElementsByTagName("input")[1].InvokeMember("click");

loading_second_page = false;

}

catch
{

}