using System;

using System.Collections.Generic;

using System.Linq;

public class myClass

{

   public int ID {get; set;} 

   public string tdName {get; set;} 

   public string tdText {get; set;} 

   public string[] tdArray {get; set;} 

}

​

public class Program

{

    public static void Main()

    {

        IList<myClass> myClasses = new List<myClass>();

​

        myClass newmyClass = new myClass() {ID = 1 , tdName = "no1", tdText = "Tisch, Stuhl, Bank, Kissen"};

        myClasses.Add(newmyClass); 

​

       newmyClass = new myClass() {ID = 2 , tdName = "no2", tdText = "Sessel, Sofa, Tisch, Regal"};

       myClasses.Add(newmyClass); 

​

       newmyClass = new myClass() {ID = 3 , tdName = "no3", tdText = "Sofa, Regal, Bett, Schrank"};

       myClasses.Add(newmyClass);

       var myErgebnis = from myEClass in myClasses

                       where (myEClass.tdText.Contains("Tisch") ) 

                       select new {myEClass.ID, myEClass.tdName, myEClass.tdText};

        Console.WriteLine(myErgebnis.Count());

    }

}