private const int randMinimum = 0;
private const int randMaximum = 26;
private const int no_of_rows = 5;
private const int no_of_columns = 5;
private Random random = new Random(Guid.NewGuid().GetHashCode());
private int[ , ] numbers = new int[ no_of_rows , no_of_columns ];
for (int row = 0; row < no_of_rows; row++)
{
for (int column = 0; column < no_of_columns; column++)
{
numbers[row, column] = random.Next(randMinimum, randMaximum);
}
}