private void ShowPurches()
{
var purches = new Purches();
purches.Show();
this.Hide();
}
private void tOOLSToolStripMenuItem_Click(object sender, EventArgs e)
{
Purches p = new Purches();
p.Show();
this.Hide();
}
private void pURCHASEToolStripMenuItem_Click(object sender, EventArgs e)
{
Purches p = new Purches();
p.TopLevel = false;
p.AutoScroll = true;
p.FormBorderStyle = FormBorderStyle.None;
p.Dock = DockStyle.Fill;
this.panelDisplay.Controls.Clear();//Clear panelDisplay
this.panelDisplay.Controls.Add(p);
p.Show();
}