How to Create a Thread-Safe Generic List?

Question

I have a Generic List as below

public static readonly List Customers = new List();

I\'m using the below met

Answer 1

Never use ConcurrangBag for ordered data. Use Array instead

Answer 2

Use the lock keyword when you manipulate the collection, ie: your Add/Find:

lock(Customers) {
    Customers.Add(new Customer());
}