How do you add, remove, or search for elements in a SortedList<TKey, TValue>?

Short answer: Add: sortedList.Add(4, "Four"); Remove: sortedList.Remove(2); // Remove element with key 2 Search (by key): bool exists = sortedList.ContainsKey(3); string value = sortedList[3]; // Access value by key

Example code

Add: sortedList.Add(4, "Four"); Remove: sortedList.Remove(2); // Remove element with key 2 Search (by key): bool exists = sortedList.ContainsKey(3);
string value = sortedList[3]; // Access value by key

Real-world example (ShopNest)

In ShopNest, an order page loads products with List<Product> so you can Add items to the cart and access them by index. Use IEnumerable<T> when you only need to loop (for example, printing invoice lines).

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.