private void btnSell_Click(object sender, EventArgs e)
{
UcBill_Sell sell = new UcBill_Sell();
pnlContent.Controls.Clear();
sell.Dock = DockStyle.Fill;
pnlContent.Controls.Add(sell);
sell.Show();
}
private void btnBill_Click(object sender, EventArgs e)
{
UcBill_Sell ucBill_Sell = new UcBill_Sell();
panelShowSP.Controls.Clear();
ucBill_Sell.Dock = DockStyle.Fill;
panelShowSP.Controls.Add(ucBill_Sell);
ucBill_Sell.Show();
}
