Geek Answers Handbook

New window handles disappear in IE

This is a continuation of the previous question that I asked here.

Earlier, I ran into the problem of switching windows in Internet Explorer 10 using Selenium 2.37.0. My C # program will go to the page, click the button that opens the link, and try to go to a new window to perform additional tasks. My program did not work, and I decided that this was due to the processing of Selenium windows. After opening a new window, the number of window descriptors ( driver.WindowHandles.Count) increases from 1 to 2, as expected, but after a while the number of window descriptors drops to 1.

I have created a minimal sample web page that reproduces this problem. Just save the following code in a file with a name test.aspxon your desktop:

<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
    <input id="btn" type="button" value="Link"  lang="javascript"     onclick="window.open('test.aspx')">
</body>
</html>

Here is my C # code (a console project in Visual Studio 2010 called TestWindowSwitching) that opens this page, presses a button and prints some output:

using System;
using System.Threading;         // Needed for Sleep
using System.Diagnostics;       // Needed for Stopwatch

using OpenQA.Selenium;
using OpenQA.Selenium.IE;

namespace TestWindowSwitching
{
    class Program
    {
        static void Main()
        {
            IWebDriver driver = new InternetExplorerDriver();

            driver.Navigate().GoToUrl("C:\\Users\\yourNameHere\\Desktop\\test.aspx");

            try { driver.SwitchTo().DefaultContent(); }
            catch { Thread.Sleep(10); }

            Console.WriteLine("Initial number of window handles: " + driver.WindowHandles.Count);

            Stopwatch sw = new Stopwatch();

            try { driver.FindElement(By.Id("btn")).Click(); }
            catch { Thread.Sleep(10); }

            // Wait until number of window handles becomes 2
            while (driver.WindowHandles.Count != 2)
            {
                // Do nothing
            }

            sw.Start();

            // Wait until number of window handles changes from 2
            while (driver.WindowHandles.Count == 2)
            {
                // Do nothing
            }

            Console.WriteLine("Number of window handles has dropped to " + driver.WindowHandles.Count
                                   + " in " + sw.ElapsedMilliseconds + " ms");

            sw.Stop();

            Console.Write("Press Enter to close...");
            Console.ReadLine();

            driver.Quit();
        }
    }
}

Here is an example output for this code:

Starting window descriptors: 1

The number of window handles dropped to 1 in 59 ms

Press Enter to close ...

I previously created a workaround for this, so for me this is no longer a problem. I just get the Javascript command (in this case, window.open('test.aspx')) and use it directly to go to the page without opening a new window.

, , , , , ( 1, 2), , Selenium, . , - , .

+4
1

, . IE → → → Reset Internet Explorer. . , , IE; , .

, . , , .

, IE, . " " "". " Internet Explorer ?", "" " ". , " ", " ".

, , 64- . ( , IE 64-, "" C:\Program Files\ - not C:\Program Files (x86)\, .) IWebDriver driver = new InternetExplorerDriver();. :

InvalidOperationException

Internet Explorer. . ( ) . (NoSuchDriver)

, IE → → " " . ; , . ( IE IE 10) , .

- . 60 . 32- ( 64- IE), .

, , .

: IE, IE. , .

+3

More articles:


All Articles