LINQ IN clause(Sql server IN operator in LINQ)

Sql Server "IN" eqivalent can be implemented in LINQ query using "Contains" method. Find the sample code below.

string s = "b,a,c,d,e,f,g,h,i,j,k,l,m";
string[] strsplt = s.Split(',');
List abc = new List() { "a", "k", "b", "g", "z", "i" };
List final = new List();
strsplt.ToList().ForEach(a =>

{

final.Add(abc.Where(b => b.Contains(a)).FirstOrDefault());

final = final.Where(kc => kc != null).ToList();

}

);