private void button3_Click(object sender, EventArgs e)
{
this.Hide();
purchasesfm purc = new purchasesfm();
purc.ShowDialog();
}
private void pURToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
purchasesfm purcfm = new purchasesfm();
//purcfm.MdiParent = this;
purcfm.Show();
}