private void button2_Click(object sender, EventArgs e)
{
frm_datsan frmdatsan = new frm_datsan();
this.Hide();
frmdatsan.Show();
}
private void button1_Click(object sender, EventArgs e)
{
panel5.Height = btnDatSan.Height;
panel5.Top = btnDatSan.Top;
frm_datsan frm2 = new frm_datsan();
this.Hide();
frm2.Show();
}
private void button1_Click(object sender, EventArgs e)
{
frm_datsan frmds = new frm_datsan();
frmds.Show();
}