How to open my DataReader object again for the same query once it is clased

public Employee EmployeeLogIn(string userName, string password)
{
    SqlCommand command = new SqlCommand();
    Employee employee = new Employee();
    int result = 0;
    try
    {
        command.Connection = ConnectionManager.GetConnection();
        command.CommandType = CommandType.StoredProcedure;
        command.CommandText = "sp_GetLogInEmployee";

        command.Parameters.Add("@UserName", SqlDbType.VarChar, 50);
        command.Parameters["@UserName"].Value = userName;
        command.Parameters["@UserName"].Direction = ParameterDirection.Input;

        command.Parameters.Add("@EncryptedPassword", SqlDbType.VarChar, 255);
        command.Parameters["@EncryptedPassword"].Value = password;
        command.Parameters["@EncryptedPassword"].Direction = ParameterDirection.Input;

        command.Parameters.Add("@result", SqlDbType.Int);
        command.Parameters["@result"].Value = result;
        command.Parameters["@result"].Direction = ParameterDirection.Output;

        SqlDataReader reader = command.ExecuteReader();

        if (reader != null && reader.HasRows == true)
        {
            //while (reader.Read())
            //{
            //    employee.ID = reader["ID"].ToString();
            //    employee.UserName = reader["UserName"].ToString();

            //}
            reader.Close();
            result = Convert.ToInt32(command.Parameters["@result"].Value);
        }
        if (result == 1)
        {

            reader = command.ExecuteReader();
            if (reader != null && reader.HasRows == true)
            {
                while (reader.Read())
                {
                    var dateOfBirth = DateTime.Parse(reader["DateOfBirth"].ToString());
                    var dob = dateOfBirth.ToShortDateString();
                    var dateofJoining = DateTime.Parse(reader["DateOfJoining"].ToString());
                    var doj = dateofJoining.ToShortDateString();
                    var created = DateTime.Parse(reader["Created"].ToString());
                    var cDate = created.ToShortDateString();
                    employee.ID = reader["ID"].ToString();
                    employee.FirstName = reader["FirstName"].ToString();
                    employee.MiddleName = reader["MiddleName"].ToString();
                    employee.LastName = reader["LastName"].ToString();
                    employee.DateOfBirth = dob;
                    employee.EmailID = reader["EmailID"].ToString();
                    employee.UserName = reader["UserName"].ToString();
                    //employee.EncryptedPassword = reader["EncryptedPassword"].ToString();
                    employee.PasswordSalt = reader["PasswordSalt"].ToString();
                    employee.DateOfJoining = doj;
                    employee.Designation = reader["Designation"].ToString();
                    employee.Code = reader["Code"].ToString();
                    employee.UserRole = reader["UserRole"].ToString();
                    employee.IsActive = int.Parse(reader["IsActive"].ToString());
                    employee.Created = cDate;
                    employee.LastUpdated = DateTime.Parse(reader["LastUpdated"].ToString());
                }
            }
        }
        else
        {
            employee = null;
        }

    }
    catch (Exception ex)
    {

        throw ex;
    }
    finally
    {
        if (command.Connection.State != ConnectionState.Closed ||
            command.Connection.State != ConnectionState.Broken)
        {
            command.Connection.Close();
        }
    }
    return employee;
}