while (reader.Read())
{
    string firstname = reader["FirstName"].ToString().Trim();

    if (!string.IsNullOrEmpty(firstname))
    {
        string fullName = reader["FirstName"].ToString().Trim() +
        reader["LastName"].ToString().Trim();

        labelFname = reader["FirstName"].ToString().Trim();
        labelSname = reader["LastName"].ToString().Trim();
        msg = "Retrieval Successful";
    }
}