var myFormat   = string.Empty;
myFormat       = "yyyy-MM-ddTHH:mm:ss";
var myDateTime = System.DateTime.Now;
var originTime = new System.DateTime(1970,1,1,0,0,0);
var mySpan     = myDateTime.Subtract(new System.DateTime(1970,1,1,0,0,0));
var value      = mySpan.TotalSeconds;

using (var sr = new StreamReader(@"C:UsersmeDesktopfile.csv"))
{
    var reader = new CsvReader(sr);
    foreach (DataRecord1 record in records.Take(5))
        {
            value       = mySpan.TotalSeconds;
            seconds     = ( float ) myDateTime;
            Debug.Print("{0}", value );
        }
}