private static void ResizeTariffArray(ref Tariff[,] array, int rows, int cols)
{
Tariff[,] newArray = new Tariff[rows, cols];
for (int i = 0; i < newArray.GetLength(0); i++)
{
for (int j = 0; j < newArray.GetLength(1); j++)
{
if (i >= array.GetLength(0) || j >= array.GetLength(1))
{
newArray[i, j] = null;
}
else
{
newArray[i, j] = array[i, j];
}
}
}
array = newArray;
}