private void 增加商品ToolStripMenuItem_Click(object sender, EventArgs e) { zjspForm_ zjsp = zjspForm_.Create(); zjsp.Loadevent += loadevent; zjsp.Show(); zjsp.Focus(); }
public static zjspForm_ Create() { if (zjsp == null) { zjsp = new zjspForm_(); } return(zjsp); }
private void zjspForm__FormClosed(object sender, FormClosedEventArgs e) { zjsp = null; }