How to Fill Data with Two Display Member Based on ComboBox in C#

using System.Data.OleDb;

OleDbConnection con = new OleDbConnection("Provider = Microsoft.ACE.OLEDB.12.0; Data Source =" + Application.StartupPath + "/studentdb.accdb");
        OleDbCommand cmd;
        OleDbDataAdapter da;
        DataTable dt;

        private void fill_data(string sql,ComboBox cbo)
        {
 
            try
            {
                con.Open();
                cmd = new OleDbCommand();
                da = new OleDbDataAdapter();
                dt = new DataTable();
 
                cmd.Connection = con;
                cmd.CommandText = sql;
 
                da.SelectCommand = cmd;
                da.Fill(dt);
 
                cbo.DataSource = dt;
                cbo.DisplayMember = "Name";
                cbo.ValueMember = "ID";
 
            }catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
 
            }
            finally
            {
                con.Close();
                da.Dispose(); 
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string sql;
            sql = "SELECT ID,(Fname + ' ' + Lname) as Name FROM tblstudent";
            fill_data(sql, comboBox1);
        }