//单例模式 public static lsdglForm Create() { if (lsdgl == null) { lsdgl = new lsdglForm(); } return(lsdgl); }
//显示连锁店管理窗口 private void 系统设置ToolStripMenuItem_Click(object sender, EventArgs e) { if (!FilterClass.lsdsz()) { MessageBox.Show("无权操作!"); return; } lsdglForm lsdgl = lsdglForm.Create(); lsdgl.Show(); lsdgl.Focus(); }
private void lsdglForm_FormClosed(object sender, FormClosedEventArgs e) { lsdgl = null; }