private void button1_Click(object sender, EventArgs e)
{
Shopping shop = new Shopping();
this.Hide();
shop.FormClosed += (s, args) => this.Close();
shop.Show();
}
private void btnLogin_Click(object sender, EventArgs e)
{
if (tbUsername.Text == "" || tbPassword.Text == "")
{
MessageBox.Show("You must input full information");
}
else
{
if (tbUsername.Text != "admin" || tbPassword.Text != "123456")
{
MessageBox.Show("You must input correct username and password");
}
else
{
this.Hide();
var sp = new Shopping();
sp.Closed += (s, args) => this.Close();
sp.Show();
}
}
}