public Form1()
        {
            InitializeComponent();


            string        Sql  = "SELECT [Lot ID] from LotID";
            SqlConnection conn = new SqlConnection(@"Data Source=(local)\SQLEXPRESS;Initial Catalog=Car Dealership;Integrated Security=True");

            conn.Open();
            SqlCommand    cmd = new SqlCommand(Sql, conn);
            SqlDataReader DR  = cmd.ExecuteReader();

            while (DR.Read())
            {
                dealerTxtBox.Items.Add(DR[0]);
                LotFilterTB.Items.Add(DR[0]);
            }


            this.dataGridView1.CellClick += new System.Windows.Forms.DataGridViewCellEventHandler(this.dataGridView1_CellClick);



            //Getting list of models for combobox
            Sql  = "SELECT [Make] from MakeModelID";
            conn = new SqlConnection(@"Data Source=(local)\SQLEXPRESS;Initial Catalog=Car Dealership;Integrated Security=True");
            conn.Open();
            cmd = new SqlCommand(Sql, conn);
            DR  = cmd.ExecuteReader();

            while (DR.Read())
            {
                if (!makeTxtBox.Items.Contains(DR[0]))
                {
                    makeTxtBox.Items.Add(DR[0]);
                }
            }



            //Getting list of Colors for combobox
            Sql  = "SELECT [Color] from ColorID";
            conn = new SqlConnection(@"Data Source=(local)\SQLEXPRESS;Initial Catalog=Car Dealership;Integrated Security=True");
            conn.Open();
            cmd = new SqlCommand(Sql, conn);
            DR  = cmd.ExecuteReader();

            while (DR.Read())
            {
                ColorComboBox.Items.Add(DR[0]);
            }



            //Hiding Stuff
            FilterLabel.Hide();
            LotFilterTB.Hide();
        }
        private void GetCars_Click(object sender, EventArgs e)
        {
            FilterLabel.Hide();
            LotFilterTB.Hide();

            con = new SqlConnection(@"Data Source=(local)\SQLEXPRESS;Initial Catalog=Car Dealership;Integrated Security=True");
            con.Open();
            SqlDataAdapter sqlDa = new SqlDataAdapter("Select * FROM CarID", con);
            DataTable      dtbl  = new DataTable();

            sqlDa.Fill(dtbl);

            dataGridView1.DataSource = dtbl;


            con.Close();
        }