Selenium syntax for CodedUI
By: Date: 16 February 2016 Categories: Uncategorized

The awnser is (of course) yes this is possible by creating a couple of extension methods and a nifty implementation of the By class.

So let me first show you how this looks when you use the extension methods I created:

CodedUI with Selenium Syntax:

So now I have the type safety I am used to with codedUi but I have the more terse syntaxt for finding elements of a certain type.

So how does this extension method look like?
So first I created an extension method on UITestControl that looks like follows:


now the magic is in the fact that we pass this function a function that can initialize the control we just instantiated with the right search properties.

This is the implementation of the By class I just mentioned. It looks like follows:


Now the only thing we need to do is implement this on all the standard types of ways to find a control. So that would be by CSS class, By CSS query, By innerText, etc.

the final thing we need is an extension method on the UITestControl for handling mouse clicks and keyboard handling. those look like follows:

The final thing I did was also implement the way we do a search by css query a bit different. As I described in previous posts the way to find a control based on e.g. custom attributes as is the case with Angular sites, I use an implementation that calls a piece of Java script. This will then return the object and we need to ensure it is of the type we expect. Only restriction is that this is called on a UITestControl of the type BrowserWindow. Unfortunately I have not found a way to enforce this in the compiler, so I implemented that as a runtime check.

The code for this looks like follows:

I put the final code here on GitHub, so you can easily download and contribute if you have additional insights.

What I shared is not complete, but I rather share it now then wait for me to find the time to finish it to support the whole Selenium set of methods.

Let me know what you think.

Hope this helps!

4 thoughts on “Selenium syntax for CodedUI

  1. Hi Marcel. I’ve been looking through your implementation for a project I’ve been working on and I like the syntax as it concisely allows searching for elements.
    A couple of things I’ve noticed:
    It’s possible to add a compile-time check for BrowserWindow if you only have one controlConstructorFunct per object by having two copies of the FindElement function:

    public static T FindElement(this UITestControl container, Func controlConstructorFunct)


    public static T FindElement(this UITestControl container, Func controlConstructorFunct)

    and then changing the CssSelector function to:

    public static Func
    CssSelector(string cssSelectorToFind)

    However I’ve modified the FindElement function to:
    public static T FindElement(this UITestControl container, Action[] controlConstructorFuncts)

    for the application that I’m coding as it allows me to add multiple search parameters and I’ve also added the static classes Contains and FilterBy for contains search properties and filter properties respectively.

  2. It seems the generics got stripped from my post, the functions were as follows:
    public static T FindElement(T)(this UITestControl container, Func(UITestControl, HtmlControl, HtmlControl) controlConstructorFunct)

    public static T FindElement(T)(this UITestControl container, Func(UITestControl, T, T) controlConstructorFunct)

    public static Func(HtmlControl,BrowserWindow,BrowserWindow)
    CssSelector(string cssSelectorToFind)

    public static T FindElement(T)(this UITestControl container, Action(HtmlControl)[] controlConstructorFuncts)

  3. May not be the most correct forum, but since long I’m being troubled by a problem in CodedUI with Chrome/firefox that the request timeout in 60 sec when used on Visual Studio 2017. Elements are highlighted & hence identified but no action taken. Worked fine in 2015.
    Below is the error:
    Result Message:
    Test method CodedUITestProject1.CodedUITest1.CodedUITestMethod1 threw exception:
    Microsoft.VisualStudio.TestTools.UITest.Extension.UITestException: The HTTP request to the remote WebDriver server for URL http://localhost:1808/session/30b39325db9854b1f39db0fed7facaac/refresh timed out after 60 seconds.
    I used 2.53 Selenium & visual studio 2017 version 15.8.8 / 15.7.6
    Any help?

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