private void salesFormToolStripMenuItem_Click(object sender, EventArgs e)
{
transactionType = "Sales";
PurchaseAndSales sales = new PurchaseAndSales();
sales.Show();
}
private void userToolStripMenuItem_Click(object sender, EventArgs e)
{
transactionType = "Purchase";
PurchaseAndSales purchase = new PurchaseAndSales();
purchase.Show();
}