LINQ (Language Integrated Query) is a powerful querying tool in .NET that allows you to perform complex queries directly in C#. The System.Linq.Expressions namespace is a part of LINQ that provides classes, interfaces, enumerations and structures to work with lambda expressions and expression trees. Lambda expressions are a way to create anonymous methods inline where they’re used, usually with the purpose of manipulating data. For example, let’s say you have a list...