C# Extension Members

**C# Extension Members**

Overview: What are extension members. Extension members allow you to define additional members for existing types without modifying their definitions. With them, you can add functionality to existing types you don’t have access to or don’t control, for example, built-in types or types from an API or commercial library.  Extension methods have been a feature of C# since version 3.0 in 2007, so the concept has been around for some time in .NET. However, traditional extension methods were just that – methods only. Extensions could not be created for properties, fields, or operators...

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