How can I compare multiple variables to a single condition?

Question

I have this:

if (input.Text.ToUpper() == "STOP")

But there are so many possible values that I wouldn't be able to specify them all separately like this:

if (input.Text.ToUpper() == "STOP" || input.Text.ToUpper() == "END")

Is there a way that you can do something like this:

if (input.Text.ToUpper() == "STOP", "END", "NO", "YES")

So that using STOP, END, NO, or YES will do the task?

Using any contains won't work, other times accepted words will have the word STOP and END in them.

Answer 1

You could use a collection like array and Enumerable.Contains:

var words = new[]{ "STOP", "END", "NO", "YES" };
if(words.Contains(input.Text.ToUpper()))
{
     // ...      
}