private void Button2_Click(object sender, EventArgs e) { NewCustomer newCustomer = new NewCustomer(); if (newCustomer.ShowDialog() == DialogResult.OK) { Customer customer = new Customer { CustomerID = newCustomer.textBox1.Text, CompanyName = newCustomer.textBox2.Text, ContactName = newCustomer.textBox3.Text, Address = newCustomer.textBox4.Text, City = newCustomer.textBox5.Text, PostalCode = newCustomer.textBox6.Text, Country = newCustomer.textBox7.Text }; dal.InsertCustomer(customer); dataGridView1.DataSource = dal.GetDataAsTable("Customers"); } }