Kevin DiTraglia Kevin DiTraglia - 24 days ago 8
C# Question

Checking multiple contains on one string

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

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?

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


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

Answer

Consider using Regex (specify characters you want to check in brackets - remember that some of them must be escaped):

Regex.IsMatch(input, @"[,/]");

or

new[] {",", "/"}.Any(input.Contains)