Hello, I've put my question at the bottom of the code below...

using System;
using System.Collections.Generic;
using System.Text;

public class Criterion
{
   public string operatorLogical;
   public string argument;
   public string operatorEquality;
   public bool isCaseSensitive;
   public List<String> values = new List<string>();
}

public class Moi
{
   public string companyName;
   public string firstName;
   // in the real app there will be +/- 30 attributes
}

class Decisions
{
   static void Main(string[] args)
   {
       // all the criterion will be held by in a criteria list
       List<Criterion> criteria = new List<Criterion>();

       // make some Criterion
       Criterion foo = new Criterion();
       foo.operatorEquality = "AND";
       foo.argument = "companyName";
       foo.operatorEquality = "eq";
       foo.isCaseSensitive = false;
       foo.values.Add("Acme");
       foo.values.Add("Inc");
       criteria.Add(foo);

       Criterion foo2 = new Criterion();
       foo2.operatorEquality = "OR";
       foo2.argument = "firstName";
       foo2.operatorEquality = "contains";
       foo2.isCaseSensitive = true;
       foo2.values.Add("Jon");
       foo2.values.Add("Rob");
       criteria.Add(foo2);
       // end making Criterion

       // make compare to this
       Moi moi = new Moi();
       moi.companyName = "Acme";
       moi.firstName = "Robert";
       // end make compare to this

       // is there a match?
       if (decision(ref moi, ref criteria))
       {
           Console.WriteLine("Matched!");
       }
       else
       {
           Console.WriteLine("NO match.");
       }

       // console
       Console.WriteLine("");
       Console.WriteLine("Press any key to exit.");
       Console.ReadLine();
   }

   static bool decision(ref Moi moi, ref List<Criterion> criteria)
   {
       /*
        * Here's where I need advice. Is it best to use a series of
        * if/try statements or a decision table/tree or an entirely
different approach
        *
        * if I where to write this in English I would write something
like...
        * IF moi.companyName Equals "Acme OR Inc" (ignore case)
        * OR moi.firstName Contains "Jon OR Rob" (case sensitive)
        *
        * TIA, especially to any suggestions that are Occam's Razor
friendly.
       */
       return true;
   }
}