private void Btn_Salir_Click(object sender, EventArgs e)
        {
            this.Dispose();
            Form_Menu_Ventas WindowView = new Form_Menu_Ventas(bl);

            WindowView.Show();
        }
 private void Btn_Salir_Click(object sender, EventArgs e)
 {
     if (label1.Text == "Administrador")
     {
         this.Dispose();
         Form_Menu_Administrador fma = new Form_Menu_Administrador(bl);
         fma.Show();
     }
     if (label1.Text == "Vendedor")
     {
         this.Dispose();
         Form_Menu_Ventas fmv = new Form_Menu_Ventas(bl);
         fmv.Show();
     }
 }