How to Add Items to a C# Array?

Extending C# Arrays: A Practical Guide

C# arrays, unlike some languages, aren't directly extensible. This means you can't simply add elements to a pre-defined array. However, several methods efficiently handle adding new items while preserving existing data.

Leveraging the Power of Lists

The most common and efficient approach involves using a List<T>, a dynamic array that automatically adjusts its size. Here's how to add items to an existing string array:

<code class="language-csharp">List<string> newList = new List<string>(existingArray);
newList.Add("New Item");
string[] newArray = newList.ToArray();</code>

This code snippet first converts the existingArray into a List<string>. The new item is then appended. Finally, the List<string> is converted back into a string[] array, newArray, containing all the original elements plus the addition. This method maintains data integrity and provides flexibility.

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