Lesson 4 - Testing in C# .NET - Selenium WebDriver syntax overview

In the previous lesson, Testing in C# .NET - Finishing unit tests and best practices, we learned to implement the PageObject design pattern in C# .NET using Selenium. In today's tutorial, we're going to describe the RemoteWebDriver API in detail and other related objects and interfaces.

RemoteWebDriver

The base of specific drivers for different browsers is the RemoteWebDriver class. ChromeDriver, FirefoxDriver, or other drivers inherit from this class. The class implements several interfaces, their names should tell what they are used for, let's take a look:

• IWebDriver
• ISearchContext
• IDisposable
• IJavaScriptExecutor
• IFindsById, IFindsByClassName, IFindsByLinkText, IFindsByName, IFindsByTagName, IFindsByXPath, IFindsByPartialLinkText, IFindsByCssSelector
• ITakesScreenshot
• IHasInputDevices, IHasCapabilities, IHasWebStorage, IHasLocationContext, IHasApplicationCache, IHasSessionId
• IAllowsFileDetection
• IActionExecutor

The public methods will be much more important to us. Let's describe which methods we can call on a ChromeDriver instance and what they do.

• Close() - Closes the browser window. If the last window is closed, the browser is closed.
• FindElement(By by) - Finds an element on the page using a selector passed by a static method on the By class. This is the preferred way to select elements and includes all the methods that we'll mention when describing RemoteWebDriver below.
• FindElements(By by) - Finds elements on the page corresponding to a given selector. The method returns ReadOnlyCollection, which is essentially a List whose items cannot be modified.
• Url - A string property. Returns the current URL. When set loads a new page from the passed URL in the current window.
• Title - Property, returns the title of the current page.
• CurrentWindowHandle -