In C# the length of an array cannot be changed. After it is instantiated with a length, dynamic resizing is not an option.

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Quizplus · Accepted Answer

In C#, once an array is instantiated with a certain length, the length cannot be changed dynamically. To add or remove elements from an array, a new array needs to be created with the updated length and the original elements need to be copied over. This can be done using methods like Array.Copy or by manually iterating over the original array and copying the elements to the new array.

In C# the Length of an Array Cannot Be Changed