C# (pronounced see sharp) is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. wikipedia.org

Windows Presentation Foundation (or WPF) is a computer-software graphical subsystem for rendering user interfaces in Windows-based applications. wikipedia.org

Universal Windows Platform (UWP), is a platform-homogeneous application architecture created by Microsoft and first introduced in Windows 10. wikipedia.org

XPath (XML Path Language) is a language for selecting nodes from an XML document. In addition, XPath may be used to compute values (strings, numbers, or boolean values) from the content of an XML document. wikipedia.org

Test-driven development (TDD) is a software development process that relies on the repetition of a very short development cycle: first the developer writes a failing automated test case that defines a desired improvement or new function, then produces code to pass that test and finally refactors

An algorithm is a step-by-step procedure for calculations. Algorithms are used for calculation, data processing, and automated reasoning. wikipedia.org

Microsoft Windows is a series of graphical interface operating systems developed, marketed, and sold by Microsoft. wikipedia.org

Extensible Application Markup Language (XAML) is a declarative XML-based language created by Microsoft used for initializing structured values and objects. It is available under Microsoft's Open Specification Promise. wikipedia.org

JSON or JavaScript Object Notation, is an open standard format that uses human-readable text to transmit data objects consisting of attribute–value pairs wikipedia.org

A regular expression provides a concise and flexible means for "matching" (specifying and recognizing) strings of text, such as particular characters, words, or patterns of characters. Abbreviations for "regular expression" include "regex" and "regexp". wikipedia.org