A quick post to give an insight on a non expected problem most likely you will stumble across when you start creating a little web app using your favorite web app framework and and ASP.NET Core web service running in your localhost. It also seemed to be a common question on the internet, but I…
Attacking the Flickering Jagged Edges of Mixed Reality in Unity3D
Intro If you have started woking on a Windows Mixed Reality project using Unity and Mixed Reality Toolkit, you might have encountered an annoying visual effect of flickering jagged edges AKA Aliasing, once you run the app on a physical immersive head mounted device (IHMD). The reason i am saying once you run it on…
TestStack White: Find Elements using AutomationElement Extensions
Have you ever faced the issue where finding an UI element using TestStack White SearchCriteria API returns null? If yes, here are few alternatives that utilises the AutomationElement.
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var tabGroup = window.Get<Tab>(SearchCriteria.ByControlType(ControlType.Tab));//return null //OR var tabUi = window.Get<UIItem>(SearchCriteria.ByAutomationId("ToolWindowTabGroupId"));//return null //OR var tabGroup = window.Get<Tab>(SearchCriteria.ByClassName("ToolWindowTabGroup"));//return null |
The alternative approach uses AutomationElement which is part of the Microsoft UI Automation API. Simply, it iterates through the children elements of AutomationElement of the White…
Visual Studio Extension: Show Solution Path on Window Title
A simple Visual Studio extension that shows the solution full path next to VS window title. To achieve that i create a visual studio extension package that needs to load as soon as a solution is detected. Then, i hook to solution opened and renamed events. On both events i read solution’s full path and append…
WPF ItemsControl with TestStack White
Problem If you are reading this blog most likely means you have been through the same unsuccessful experience I had of trying to get a WPF ItemsControl control via automation ID using TestStack.White API (v0.13.3) in order to carry on some UI test automation.
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public ObservableCollection<string> DummyDataSource { get; set; } |
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<ItemsControl x:Name="TheItemsControl" AutomationProperties.AutomationId="TheItemsControlId" ItemsSource="{Binding DummyDataSource}"/> |
Acquiring a WPF ListBox via automation ID using White is simple job.…
Rx Sample Application: From Requirements to Implementation
Intro The purpose of this post is to put in practice and crystallise what we learnt in the Reactive Programming post. The deliverable of this post is a desktop application built with WPF (MVVM) and Rx. However, the concepts apply to any UI framework; web, mobile, or desktop. If you want to know more about reactive…
Insights on Linq Count() vs Count Property
In this post I am investigating the difference between Count property and Count() extension method of the .NET enumerable. Below code snippet sets the scene of what we trying to answer.
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static void Main(string[] args) { IList<int> ages = ReadAges(); int ageCount = ages.Count; //Interface Property //OR int ageLinqCount = ages.Count(); //Linq extension IEnumerable<string> names = ReadNames(); var nameCount = names.Count(); //Linq extension; only option } private static IEnumerable<string> ReadNames() { //... } private static IList<int> ReadAges() { //... } |
As in the previous post will start by decompiling the System.Core 4.0.0.0 dll.
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//Count() extension method implementation public static int Count<TSource>(this IEnumerable<TSource> source) { if (source == null) { throw Error.ArgumentNull("source"); } ICollection<TSource> collection = source as ICollection<TSource>; if (collection != null) { return collection.Count; } ICollection collection2 = source as ICollection; if (collection2 != null) { return collection2.Count; } int num = 0; checked { using (IEnumerator<TSource> enumerator = source.GetEnumerator()) { while (enumerator.MoveNext()) { num++; } } return num; } } |
The Linq Count() extension method behaves differently based on the…
Insights on Linq Any() Performance
The Enumerable.Any<TSource>() is an extension method that lives in System.Core assembly under System.Linq namespace. If you are wondering what happens with the extended enumerable source then this is the right post. In the right gets enumerated or not then we would have to look at the implementation. In System.Core 4.0.0.0 the Any(…) method comes with two overloads which is worth investigating. Simply…
Visual Studio Custom Commands: Pending Changes
Having frequently used IDE menus in vicinity definitely makes my life easier. I hope it makes yours as well. Because Pending Changes is buried in the Team Explorer View, having it front and center saves me one extra click. Same applies for example to Source Control Explorer. Steps Tools –> Customise Select Commands Tab. Select Toolbar…
Mixed Form Concurrency
In the Insights on .NET Concurrency series we covered three main forms of concurrency in that can be used to solve different problems. Each form has its own strengths to solve problems of this complex world. The right tool for the right job. Parallel programming using TPL offers easy way of parallelising operations in order to increase…