[c#] How to maximize the browser window in Selenium WebDriver (Selenium 2) using C#?

Is there any way to maximize the browser window using WebDriver (Selenium 2) with C#?

For Webdriverjs (node.js), the following maximizes chrome window.

var webdriver = require('selenium-webdriver');
var driver = new webdriver.Builder().
withCapabilities(webdriver.Capabilities.chrome()).build();
driver.manage().window().maximize();
driver.get('hxxp://localhost:8888');

Test step/scenario:
1. Open a browser and navigate to TestURL
2. Maximize the browser

Maximize the browser with C# (.NET):

driver.Manage().Window.Maximize();

Maximize the browser with Java :

driver.manage().window().maximize();

Another way to do with Java:

Toolkit toolkit = Toolkit.getDefaultToolkit();
Dimension screenResolution = new Dimension((int) 
                    toolkit.getScreenSize().getWidth(), (int) 
                    toolkit.getScreenSize().getHeight());

driver.manage().window().setSize(screenResolution);

Chrome driver already support:

Java:

webDriver = new ChromeDriver();
webDriver.manage().window().maximize();

using System.Windows.Forms;
using System.Drawing;

public static void MaximizeBrowser(this IE myBrowser)
{
    myBrowser.SizeWindow(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
}

I used Jim's code, but slightly modified for use with WatiN and C# to maximize the browser.

For IE and Firefox:

driver.manage().window().maximize();

For Chrome:

ChromeOptions options = new ChromeOptions();
options.addArguments("--start-maximized");
driver = new ChromeDriver( options )

For Java:

driver.manage().window().maximize();

It will work in IE, Mozilla, Chrome

Through the below code i'm able to maximize the window,

((JavascriptExecutor) driver).executeScript("if(window.screen){
    window.moveTo(0, 0);
    window.resizeTo(window.screen.availWidth, window.screen.availHeight);
    };");

For me, none of the solutions above worked when working with Selenium Web Driver C# + Chrome:

• window.resizeTo(1024, 768); - I want to use the whole screen
• --start-maximized - it is ignored
• driver.manage().window().maximize(); - does not work because it requires some extension and I am not allowed to use Chrome extensions

I managed to get it working using InputSimulator:

var inputSim = new InputSimulator();
// WinKey + UP = Maximize focused window
inputSim.Keyboard.ModifiedKeyStroke(VirtualKeyCode.LWIN, VirtualKeyCode.UP);

I tried many of the answers above, but none work well. My chrome driver version is 2.7 and Iam using selenium-java vesion is 2.9.0. The official document suggests using:

var capabilities = new DesiredCapabilities();
var switches = new List<string>
                       {
                           "--start-maximized"
                       };
capabilities.SetCapability("chrome.switches", switches);    
new ChromeDriver(chromedriver_path, capabilities);

The above also does not work. I checked the chrome driver JsonWireProtocol: http://code.google.com/p/selenium/wiki/JsonWireProtocol

The chrome diver protocol provides a method to maximize the window:

/session/:sessionId/window/:windowHandle/maximize,

but this command is not used in selenium-java. This means you also send the command to chrome yourself. Once I did this it works.

For C#:

driver.Manage().Window.Maximize();

For Java:

driver.manage().window().maximize();

If you are using the Chrome Driver you can set the capabilities

    var capabilities = new DesiredCapabilities();

    var switches = new List<string>
                       {
                           "--start-maximized"
                       };

    capabilities.SetCapability("chrome.switches", switches);

    new ChromeDriver(chromedriver_path, capabilities);

Java

driver.manage().window().maximize();

Python

driver.maximize_window()

Ruby

@driver.manage.window.maximize

OR

max_width, max_height = driver.execute_script("return [window.screen.availWidth, window.screen.availHeight];")
@driver.manage.window.resize_to(max_width, max_height)

OR

target_size = Selenium::WebDriver::Dimension.new(1600, 1268)
@driver.manage.window.size = target_size

You can use Selenium Emulation in WebDriver:

selenium = new WebDriverBackedSelenium(driver,url);
selenium.windowMaximize();

This is working fine for me.

Capybara.current_session.driver.browser.manage.window.resize_to(1800, 1000)

I used this solution

            OpenQA.Selenium.Chrome.ChromeOptions chromeoptions = new OpenQA.Selenium.Chrome.ChromeOptions();
            chromeoptions.AddArgument("--start-maximized");
            OpenQA.Selenium.Chrome.ChromeDriver chrome = new OpenQA.Selenium.Chrome.ChromeDriver(chromeoptions);

I had the same problem, but the problem can be solved by using following code.

driver.manage().window().fullscreen();

Simply use Window.Maximize() command

WebDriver driver= new ChromeDriver()
driver.Manage().Window.Maximize();  

The below line of code would maximize IE, Chrome and Mozilla

driver.manage().window().maximize();

The above line of code and other workarounds mentioned in the post did not work for NodeWebKit browser, so as a workaround i had to use native C# code as mentioned below:

public static void MaximiseNWKBrowser(IWebDriver d)
        {
            var body = UICommon.GetElement(By.TagName("body"), d);
            body.Click();
            string alt = "%";
            string space = " ";
            string down = "{DOWN}";
            string enter = "{ENTER}";
            SendKeys.SendWait(alt + space);
            for(var i = 1; i <= 6; i++)
            {
                SendKeys.SendWait(down);
            }
            SendKeys.SendWait(enter);            
        }

So this workaround basically uses "ALT+SPACE" to bring up the browser action menu to select "MAXIMIZE" from the options and presses "ENTER"

We have observed bug with new driver libraries. You can use slightly old jars which are able to handle new browsers versions.

The main generic option is :-

driver.manage().window().maximize();

You can also use other option for maximizing the browser window.

Example:-

Add below option and pass it to driver:-

    chromeOptions.addArguments("--start-maximized");

The full code will look like below :-

System.setProperty("webdriver.chrome.driver","D:\\Workspace\\JmeterWebdriverProject\\src\\lib\\chromedriver.exe");
ChromeOptions chromeOptions = new ChromeOptions();
chromeOptions.addArguments("--start-maximized");
driver = new ChromeDriver(chromeOptions);

OR

Toolkit toolkit = Toolkit.getDefaultToolkit();
int Width = (int) toolkit.getScreenSize().getWidth();
int Height = (int)toolkit.getScreenSize().getHeight();
//For Dimension class, Import following library "org.openqa.selenium.Dimension"  
driver.manage().window().setSize(new Dimension(Width,Height));
driver.get("https://google.com");

Try this on safari :-

JavascriptExecutor jse = (JavascriptExecutor)driver;
String screenWidth = jse.executeScript("return screen.availWidth").toString();
String screenHeight = jse.executeScript("return screen.availHeight").toString();
int intScreenWidth = Integer.parseInt(screenWidth);
int intScreenHeight = Integer.parseInt(screenHeight);
Dimension d = new Dimension(intScreenWidth, intScreenHeight);
driver.manage.window.setSize(d);

You can use something like this (C#):

driver.Manage().Window.Size = new Size(1024, 768);

There is a function that you can use to maximize the window in Python which is window_maximize(). And this is how I'm using it.Hope this helps -

from selenium import selenium
sel = selenium('localhost', 4444, '*firefox', 'http://10.77.21.67/')
sel.start()
sel.open('/')
sel.wait_for_page_to_load(60000)
#sel.window_focus()
sel.window_maximize()
png = sel.capture_screenshot_to_string()
f = open('screenshot.png', 'wb')
f.write(png.decode('base64'))
f.close()
sel.stop()

You can try with this code to maximize chrome window.

ChromeOptions options = new ChromeOptions();
options.addArguments("--window-size=1920,1080");

WebDriver driver = new ChromeDriver(options);

C# client drivers:

driver = new FirefoxDriver(firefoxProfile);
driver.Manage().Window.Size = new System.Drawing.Size(System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width+10, System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height+10);

===> also add a reference to the .NET assembly "System.Windows.Forms"

... the only problem is that it's not positioned correctly
... please comment if you can correct this

The following Selenium Java code snippet worked for me:

driver.manage().window().setPosition(new Point(0,0));
java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
Dimension dim = new Dimension((int) screenSize.getWidth(), (int) screenSize.getHeight());
driver.manage().window().setSize(dim);

This option is fine for me :

ChromeOptions options = new ChromeOptions();
options.addArguments("start-fullscreen");

This option works on all OS.

driver.Manage().Window.Maximize();

This works for IE and Firefox. Chrome does not work. There is a bug submitted for this on ChromeDriver project.

Meanwhile, the get around for the chrome is to implement what Joey V. and Coder323 suggested.

ChromeOptions options = new ChromeOptions();
options.addArgument("--start-maximized");
driver = new ChromeDriver(options);

Here's what worked for me in C#, firefoxDriver is global to the class:

in the usings:

using System.Drawing;
using System.Windows.Forms;

in the code:

this.firefoxDriver = new FirefoxDriver();
this.firefoxDriver.Manage().Window.Position = new Point(0, 0);
this.firefoxDriver.Manage().Window.Size = new Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);