My Blog

Sharing programming insights since 2015. 160 articles (and counting!) filled with real-world experience and practical tips.

    Map one C# Record to another with AutoMapper

    Records were introduced in C# 9.0 and are a handy way of holding data, instead of using properties of classes. I recently came along the task of mapping one record of one type to one of another type by using AutoMapper. At first I thought I will map them exactly as I would map the properties of two different classes. However, it was trickier than that :)

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    Parse your XML with XPATH and find a value of an element based on the value of another element

    When parsing and reading XML files in your C# code, you can use the XDocument or XElement objects to access it with LINQ and the Descendants or Elements properties. However, there is another option; you can use XPATH for traversing the XML. In this example we are going to see how you access a value of an XML-element, by matching the value of another element with a value given from the user.

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    How to create an empty or with one element IReadOnlyCollection for your unit-tests

    When using the Moq framework for mocking your C# classes, you will have do define what dummy value or values a method of the mocked classes returns. For that we use the Setup method and in the Returns method we define the returned value. The question now is, which dummy value to return when your methods return a IReadOnlyCollection collection.

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    How to pass parameters to an AutoMapper Profile constructor aka Dependency Injection for AutoMapper

    While using AutoMapper for mapping different objects in your application, you might encounter situations where you need business logic from other services during the mapping process. To handle this, you can inject these services into your Profile class.

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    How to fix the "Unable to find assembly Microsoft.VisualStudio.QualityTools.LoadTest ..." error when running your unit-tests

    For an older MVC project I wrote unit-tests with the MSTest framework. Visual Studio requires a .testsettings file in your project, which contains the configuration for the unit-tests.

    When running or debugging unit-tests there might be the case that the “Unable to find assembly Microsoft.VisualStudio.QualityTools.LoadTest …” error is logged and the test is getting skipped. In order to correct this issue you have to check inside the .testsettings file for the WebTestRunConfiguration section.

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