void btnAddAnSang_Click(object sender, EventArgs e)
{
var form = new AddAnSangForm();
form.ShowDialog();
this.showAnSangList();
}
void btnAddAnSang_Click(object sender, EventArgs e)
{
var form = new AddAnSangForm();
form.ShowDialog(); //hoan thanh form hien thi , ko thao tac dc 2 form
this.ShowAnSangList();
}
