how to append all the int in an array c# code example

Example 1: c# append array

List<int> termsList = new List<int>();
for (int runs = 0; runs < 400; runs++)
{
    termsList.Add(value);
}

// You can convert it back to an array if you would like to
int[] terms = termsList.ToArray();

Example 2: c# int array add number

arr[index] = value;