private void button2_Click(object sender, EventArgs e)
{
z_c zc = new z_c();
this.Hide();
zc.ShowDialog();
}
private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
{ //判断窗口是否打开过
foreach (Form childForm in this.MdiChildren)
{
//判断打开的子窗体镇南关,是否存在该子窗体
if (childForm is z_c)
{
//说明有打开过的窗口
childForm.Visible = true;
//设置活动窗口
childForm.Activate();
//获得焦点
childForm.Focus();
//窗口最大化
//childForm.WindowState = FormWindowState.Maximized;
return;
}
}
z_c zc = new z_c();
zc.MdiParent = this;
zc.Show();
//窗口最大化
//zc.WindowState = FormWindowState.Maximized;
// Mdiparent
}