C# what is the point or benefit of an indexer?

Question

Doing some code reading and stumbled upon this snippet that I haven\'t seen before:

public SomeClass {
  public someInterface this[String strParameter] {
            


        

Answer 1

That's called an Indexer, they allow you to use List<>, ArrayList, Dictionary<> and all the other collections using an array syntax.

It's just syntactic sugar, but it gives some readability when used right.