Check out example codes for "C# extend array". It will help you in understanding the concepts better.

Code Example 1

string[] items = new string[3] { "input1", "input2", "input3" };
string[] moreItems = new string[10] { "input4", "input5" };

// array to list
List<string> itemsList = items.ToList<string>();

// or merge an other array to the list

// list to array
string[] newArray = itemsList.ToArray();

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