C# มีวิธีดึงค่ามาจาก Database แล้วโชว์ ในดรอปดาว (DropDownList) ไหมครับ

		//*** DropDownList ***//
		this.myDDL1.DataSource = dt;
		this.myDDL1.DataTextField = "CountryName";
		this.myDDL1.DataValueField = "CountryCode";
		this.myDDL1.DataBind();	

 SqlConnection objConn = new SqlConnection();
            string sql = "SELECT * FROM customer WHERE CustomerID = '"+ ["CustomerID"] +"' ";
            objConn.Open();
            SqlDataAdapter da = new SqlDataAdapter(sql, objConn);
            DataSet ds = new DataSet();
            da.Fill(ds, "Cus");
            comboBox1.DataSource = ds.Tables["Cus"];
            comboBox1.DisplayMember = "NAME";
            comboBox1.ValueMember = "CustomerID";