How to split text in c#?

using System;

namespace TestApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            string strText = "STR_LOCAL_ABS_CERAMIUM_A21";

            string[] container = strText.Split('_');

            //First way
            for (int i = 0; i < container.Length; i++)
            {
                if (i == (container.Length-2))
                {
                    Console.WriteLine("value is _{0}", container[i]);
                }
            }
            //Second Way
            foreach (string item in container)
            {
                if (item.Contains("CERAMIUM"))
                {
                    Console.WriteLine("value is _{0}", item);
                }
            }
                Console.ReadKey();
        }
    }
}