public void TestGetGuid()
        {
            var reader = new ListDataReader <Student>(_Students);

            reader.Read();
            var col = "Guid2";

            Assert.Equal(Guid.Parse("E82E26DA-AED1-4FD3-BFF9-73BE66F28EED"), reader.GetGuid(col));
            reader.Read();
            reader.Read();
            Assert.Equal(Guid.Parse("A82E26DA-AED1-4FD3-BFF9-73BE66F28EED"), reader.GetGuid(col));
        }