private void button1_Click(object sender, EventArgs e)
{
var frm_themNha = new themBaiDang();
frm_themNha.Location = this.Location;
frm_themNha.StartPosition = FormStartPosition.Manual;
frm_themNha.FormClosing += delegate { this.Show(); };
frm_themNha.Show();
this.Hide();
}
private void btnAdd_Click(object sender, EventArgs e)
{
var frm_ThemBD = new themBaiDang();
frm_ThemBD.Location = this.Location;
frm_ThemBD.StartPosition = FormStartPosition.Manual;
frm_ThemBD.FormClosing += delegate { this.Show(); };
frm_ThemBD.Show();
this.Hide();
}