Using the OR operator with integers?

[Robert Hodan]

I'm attempting to code a soundboard, however, due to the policies of who I am coding for, I need to create a profanity filter, currently, what I am trying to do, is create a statement that takes the currently selected index, and if it matches one of the marked profane containing indexes, it will not be played, and display a message explaining why.
However, I get this error:
Operator '||' cannot be applied to operands of type 'bool' and 'int'.
I've tried using the bitwise OR ( | ) and I get:
Operator '|' cannot be applied to operands of type 'bool' and 'int'.
Any help?
Here is the code if it helps.

int index = listBoxCrazyEights.SelectedIndex;
if (index == 6 || 8 || 9)
{
//Code here if this is true
}

[GaryTexmo]

You need to say what you're comparing against each time.

if (index == 6 || index == 8 || index == 9) ...

What you have there is trying to compare index against the result of (6 || 8 || 9) and since integers aren't booleans (well, not anymore :P) you get the error.

[Plater]

If you had a collection such as List<int> you could just state if its contained in it or not.
Example:

List<int> ProfaneIndexes = new List<int>();
ProfaneIndexes.Add(6);
ProfaneIndexes.Add(8);
ProfaneIndexes.Add(9);
int CurrentIndex = listBoxCrazyEights.SelectedIndex;
if (ProfaneIndexes.Contains(CurrentIndex))
{//index is in the "Profane" category
}
 
When your list of profane indexes gets large, this will become much more helpful.