bubble sort in C#

int[] number = { 1, 6, 3, 9, 2, 8 };
int temp =0;

for (int i = number.Length ; i>=1; i--)
{
for (int j = 0; j < i-1; j++)
{
if (number[j]>number[j+1])
{
temp = number[j+1];
number[j + 1] = number[j];
number[j] = temp;

}
}
}

// Display the result in the messageBox
for (int i = 0; i < number.Length; i++)
{
MessageBox.Show(number[i].ToString());
}