C# Access Db update query not Updating when data is changed

Question

This is the code i wrote but it's not changing any data in the database even after a successful messageBox

 connection.Open();
            command = new OleDbCommand("UPDATE employeeTable SET fullname=@fullname, [gender]=@gender, [dept]=@dept, [sector]=@sector, [sub_sector]=@sub_sector, [timetable]=@timetable WHERE empid=@empid", connection);



            command.Parameters.AddWithValue("@empid", txtEmpID.Text);
            command.Parameters.AddWithValue("@fullname", txtName.Text);
            command.Parameters.AddWithValue("@gender", cboGender.SelectedItem.ToString());
            command.Parameters.AddWithValue("@dept", cboCompany.SelectedItem.ToString());
            command.Parameters.AddWithValue("@sector", cboSector.SelectedItem.ToString());
            command.Parameters.AddWithValue("@sub_sector", cboSub.SelectedItem.ToString());
            command.Parameters.AddWithValue("@timetable", cboTimetable.SelectedItem.ToString());
            command.ExecuteNonQuery();
            connection.Close();
            MessageBox.Show("Record Updated Successfully!", "NEW EMPLOYEE ADDED", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);

Answer 1

The arrangement of parameters in your OleDbCommand and Parameters must be the same

Answer 2

I didn't get to run your code so you might want to try using

 command.ExecuteScalar();

instead of

command.ExecuteNonQuery();

Also try to avoid direct use of SQL Reserve words for your database table Fields like LEVEL etc so that you avoid SQL Errors.