using System;

using System.Linq;

using System.Collections.Generic;                   

using System.Collections;                   

using System.Xml;                   

using System.Xml.Linq;

using System.Data;

using System.Data.DataSetExtensions;

using System.Data.Linq;

using System.Runtime;                                       

using System.Runtime.Remoting;

using System.Globalization;

using System.Runtime.CompilerServices;

using System.Reflection;                    

public class Program

{

    public static void Main()

    {

        DataTable dt= new DataTable();

        dt.Columns.Add("col1", typeof(bool));

        dt.Columns.Add("col2", typeof(bool));

        dt.Columns.Add("col3", typeof(bool));

        dt.Rows.Add( new object[] {true, false, true});

        dt.Rows.Add( new object[] {true, false, false});

        dt.Rows.Add( new object[] {false, false, true});

        dt.Rows.Add( new object[] {true, false, true});

        var count = dt.AsEnumerable()

            .Select(row=>row.Field<bool>("col1"))           

            .Count(c=>!c);

        Console.WriteLine(count);

    }

}

​

​

​