private void button6_Click(object sender, EventArgs e)
 {
     Routing.AddPage(new Ui.ui_Rapor());
 }
 private void button4_Click(object sender, EventArgs e)
 {
     Routing.AddPage(new Ui.Ui_CustomerAccount());
 }
 private void button10_Click(object sender, EventArgs e)
 {
     Routing.AddPage(new Ui.Customers.Ui_CustomerAdd());
 }
 private void button5_Click(object sender, EventArgs e)
 {
     Routing.AddPage(new SalePage());
 }
 private void button8_Click(object sender, EventArgs e)
 {
     Routing.AddPage(new Ui_ProductAddPage());
 }