private void button2_Click(object sender, EventArgs e)
{
this.Hide();
manGoods cus = new manGoods();
cus.ShowDialog();
this.Close();
}
public Form2()
{
InitializeComponent();
TabPage page = new TabPage();
manCustomer form = new manCustomer();
form.TopLevel = false;
form.Visible = true;
form.Dock = DockStyle.Fill;
form.FormBorderStyle = FormBorderStyle.None;
page.Controls.Add(form);
this.tabControl1.TabPages.Add(page);
/////////////////
manGoods formGood = new manGoods();
formGood.TopLevel = false;
formGood.Visible = true;
formGood.Dock = DockStyle.Fill;
formGood.FormBorderStyle = FormBorderStyle.None;
//page.Controls.Add(formGood);
}