How is memory allocated for list elements?

In C#, memory for a list (for example, List<T>) is allocated dynamically. When a list is created, an internal array of a certain size is allocated (by default, small, for example, 4 elements). When the number of added elements exceeds the current size of the array, a new, larger array is allocated (usually twice as large), and existing elements are copied to the new array. This allows efficient memory management and minimizes the number of allocations.

Example:

List<int> numbers = new List<int>();
numbers.Add(1);
numbers.Add(2);
// When adding elements, the internal array expands automatically

Thus, memory is not allocated for each element separately, but in blocks for the internal array, which increases performance.