Checking multiple contains on one string

Question

So I have a conditional that currently looks like this...

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if (input.Contains(",") || input.Contains("/") || input.Contains(@"\") || input.Contains("."))

I need to add a few more characters that I want to check for and was wondering if there's a more condensed syntax to accomplish the same thing? Something similar to SQL's IN operator?

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if ( input IN (",", "/", @"\", ....etc )  )

Anybody know of any cool tricks to accomplish this without adding lots of code?

Answer 1

Does this win for shortest?

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@".,/\".Any(input.Contains)

Answer 2

How about this?

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    if(input.IndexOfAny(new char[] { ',', '/', '\\', '.' })>=0)
    {

    }