Question

I am attempting to extend a List. When using Visual Studio there are the different code hints for all the functions I can use with a List object. How can I extend the functionality of the List to show my new function?

public class ListExtensionHelper<T> : System.Collections.Generic.List<T>
{
    public List<T> AwesomeFunction<T>()
    {
    }
}

For the life of me I could not find anything online on how I would do it for a List

Answer 1

If you are trying to add AwesomeFunction as an extension method to a regular List object, then you need to define an extension method in a static class:

public static class ListExtensions
{
    public static List<T> AwesomeFunction<T>(this List<T> list)
    {
    }
}

Otherwise, the code you have should work; if you instantiate the ListExtensionHelper class, it should have all the functions of List as well as AwesomeFunction.