C # Unusual method / property creation

Question

Can someone explain the code and its use. This was a .net 3.5 application. I've never seen anything like it before:

int IList.Add(object value) => this.Add(value as Trigger)

this code was outside and was not part of any method, but inside the main class.

I get an error in this code, but to fix the error, I need to understand why and why.

Sorry, I don’t have the full code, I can’t provide more information, I just want to understand why it is.

Answer 1

You can expand

int IList.Add(object value) => this.Add(value as Trigger)

like this:

int IList.Add(object value) { return this.Add(value as Trigger); }

, - # 6, , , Visual Studio.Net 2015. .

( MS " " ), , .Net framework. # 6 3.5, .Net frameworks.