Multiple string comparison with C#

Question

Let's say I need to compare if string x is "A", "B", or "C".

With Python, I can use in operator to check this easily.

if x in ["A","B","C"]:     do something 

With C#, I can do

if (String.Compare(x, "A", StringComparison.OrdinalIgnoreCase) || ...)     do something 

Can it be something more similar to Python?

ADDED

I needed to add System.Linq in order to use case insensitive Contain().

using System; using System.Linq; using System.Collections.Generic;  class Hello {     public static void Main() {         var x = "A";          var strings = new List<string> {"a", "B", "C"};         if (strings.Contains(x, StringComparer.OrdinalIgnoreCase)) {             Console.WriteLine("hello");         }     } } 

or

using System; using System.Linq; using System.Collections.Generic;  static class Hello {     public static bool In(this string source, params string[] list)     {         if (null == source) throw new ArgumentNullException("source");         return list.Contains(source, StringComparer.OrdinalIgnoreCase);     }      public static void Main() {         string x = "A";          if (x.In("a", "B", "C")) {             Console.WriteLine("hello");         }     } } 

Answer 1

Use Enumerable.Contains<T> which is an extension method on IEnumerable<T>:

var strings = new List<string> { "A", "B", "C" }; string x = // some string bool contains = strings.Contains(x, StringComparer.OrdinalIgnoreCase); if(contains) {     // do something } 

Answer 2

if ((new[]{"A","B","C"}).Contains(x, StringComparer.OrdinalIgnoreCase))