using System;

using System.Data;

using System.Linq;

using System.Linq.Expressions;

using System.IO;

using System.Xml;

using System.Xml.Linq;

using System.Xml.Serialization;

using System.Text;

using System.Security.Cryptography;

using System.Reflection;

using System.Collections;

using System.Collections.Generic;

using System.Globalization;

using System.Text.RegularExpressions;

using System.Runtime.Serialization;

using System.Runtime.Serialization.Formatters.Binary;

public class Program

{

    public static void Main(string[] args)

    {

        // modified string !

        // "!=" -> "<>"; CA -> 'CA'

        string condition = "('69'='69' OR '69'='66' OR '69'='21' OR '69'='93') AND ('CA'='FL' OR 'CA'='WA') AND ('22'<>'31' AND '22'<>'19')";           

        Console.WriteLine(TestCondition(condition));

        // print FALSE because ('CA'='FL' OR 'CA'='WA') is FALSE

    }

​

    public static bool TestCondition(string c)

    {

        var dt = new DataTable();

        dt.Columns.Add("col");

        dt.Rows.Add("row");

        // hack

        // c is constant and doesn't depend on dt columns

        // if there are any rows, c is TRUE

        var rows = dt.Select(c);

        return rows.Length > 0;

    }

}

​