I want to pass the selected index to a method. I have several listbox's and I want to figure out how I can pass that particular listbox's selected index to a method and then return some result. Not sure if I want it to just be a boolean or a number. I am thinking a boolean value would suffice.

checkDialsPosition(listbox1.SelectedIndex);

private void checkDialsPosition(chckthis listbox)
{
if (chckthis.SelectedIndex == 1)
{
if (dialPosition > 34 & dialPosition < 72)
{
pictureBox1.BackColor = Color.Green;
return true;
}
else { pictureBox1.BackColor = Color.Red;
return false;
}
}
}