private void stockRecordToolStripMenuItem_Click(object sender, EventArgs e)
{
//change page by clicking the item Fill in the page name
StockRecord sr = new StockRecord();
sr.Show();
}
private void stockRecordToolStripMenuItem_Click_1(object sender, EventArgs e)
{
this.Hide();
StockRecord sr = new StockRecord();
sr.Show();
}