SqlDataReader Class Eşleştirme

public static class SqlReaderExtensionMethods
    {
        public static T GetValue(this SqlDataReader reader, int i)
        {
            var result = reader.GetValue(i);
            return result is DBNull ? default(T) : (T)result;
        }
        public static T GetValue(this SqlDataReader reader, string columnName)
        {
            if (string.IsNullOrWhiteSpace(columnName))
                throw new ArgumentNullException();
            int columnIndex = reader.GetOrdinal(columnName);
            var result = reader.GetValue(columnIndex);
            return result is DBNull ? default(T) : (T)result;
            
        }

        public static void GetValue(this SqlDataReader reader,out T property)
        {            
            property = GetValue(reader, nameof(property)); 
        }

        
        public static void MapClass(this SqlDataReader reader, ref T obj, bool mapAlsoStaticProperties = false) where T : class
        {
            var properties = typeof(T).GetProperties().Where
                (
                q => q.CanWrite == true

                && mapAlsoStaticProperties ? true : !q.GetAccessors(true)[0].IsStatic
                ).Select(q => q.Name);
            foreach (var propName in properties)
            {
                var prop = obj.GetType().GetProperty(propName);
                int columnIndex = reader.GetOrdinal(propName);
                var result = reader.GetValue(columnIndex);
                prop.SetValue(obj, result is DBNull ? GetDefault(prop.GetType()) : result, null);
            }
        }

        private static object GetDefault(Type type)
        {
            if (type.IsValueType)
                return Activator.CreateInstance(type);
            return null;
        }
    }

//KULLANIM ŞEKLİ
result = new List<LABSONUC>();

if (reader.HasRows)
while (reader.Read())
{
 var ls = new LABSONUC();
 reader.MapClass(ref ls);
 yield return ls;
}