contactClass error on Add button

Question

I have a winform that is connected to 2 databases. One database is to display data in a combobox and the other is to save the data form the winform application. I created a parkingClass.cs, then double clicked the add button to write the script. When I type contactClass c = new contactClass(); I get an error (last line of code below). I hover over the error to get recomendations to correct the error but "using ParkingForm.parkingClasses;" does not appear in the list of option to correct the issue. How do I resolve the error?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace Parking
{
public partial class ParkingForm : Form
{
SqlConnection con = new SqlConnection("Data Source=CAD;Initial Catalog=Reporting_System;Persist Security Info=True;User ID=sa;Password=***********");
public ParkingForm()
{
InitializeComponent();
}
private void ParkingForm_Load(object sender, EventArgs e)
{
try
{
con.Open();
SqlCommand sc = new SqlCommand("select Emp_Name from Personnel where JurisdictionID = 99 order by Emp_Name asc", con);
SqlDataReader reader;
reader = sc.ExecuteReader();
DataTable dt = new DataTable();
dt.Columns.Add("Emp_Name", typeof(String));
dt.Load(reader);
Dispatcher.ValueMember = "Emp_Name";
Dispatcher.DataSource = dt;
con.Close();
}
catch (Exception)
{
}
}
private void label6_Click(object sender, EventArgs e)
{
}
private void Savebtn_Click(object sender, EventArgs e)
{
contactClass c = new contactClass();
}
}
}