private void 实验选择ToolStripMenuItem_Click(object sender, EventArgs e) { if (checkchildfrm("F_ExperimentManage") == false) { F_ExperimentManage F_EV = new F_ExperimentManage(); F_EV.MdiParent = this; F_EV.WindowState = FormWindowState.Maximized; F_EV.Tag = 1; F_EV.Text = "实验选择"; F_EV.Show(); } }