using System;

using System.Linq;

using System.Linq.Expressions;

​

public class WorkOrder {

    public string Location { get; set; }

}

​

public class Program

{   

    public static void Main()

    {

        var filterList = new [] {

            "filterOne",

            "filterTwo",

            "filterN"          

        };      

        Expression<Func<WorkOrder, bool>> predicate = filelist => false;

        foreach(var filter in filterList) {

            Expression<Func<WorkOrder, bool>> orPredicate = filelist => filter.Contains(filelist.Location);

            var body = Expression.Or(predicate.Body, orPredicate.Body);

            predicate = Expression.Lambda<Func<WorkOrder,bool>>(body, predicate.Parameters[0]);

        }

        IQueryable<WorkOrder> myQueryable = Enumerable.Empty<WorkOrder>().AsQueryable().Where(predicate);           

    }

}