Quick Answer

Essential operations with generic lists.

Understanding the Issue

List<T> is a dynamically resizable array. Provides methods for adding, removing, finding, and sorting elements with type safety.

The Problem

This code demonstrates the issue:

Csharp Error 
// Need to create and manipulate a list

The Solution

Here's the corrected code:

Csharp Fixed 
List<string> fruits = new() { "Apple", "Banana" };

// Adding
fruits.Add("Orange");
fruits.Insert(0, "Mango");

// Removing
fruits.Remove("Apple");
fruits.RemoveAt(0);

// Searching
bool hasBanana = fruits.Contains("Banana");
int index = fruits.FindIndex(f => f.StartsWith("B"));

// Sorting
fruits.Sort(); // Alphabetical
fruits.Sort((a,b) => b.Length.CompareTo(a.Length)); // Custom

Key Takeaways

List<T> provides flexible collection operations with type safety.