public static tjfrom CreateForm()
{
if (_danli == null)
{
_danli = new tjfrom();
}
return(_danli);
}
private void toolStripButton8_Click(object sender, EventArgs e)
{
if (!FilterClass.tjbb())
{
MessageBox.Show("无权操作！");
return;
}
tjfrom tongjibaobiao = tjfrom.CreateForm();
tongjibaobiao.MdiParent = this;
tongjibaobiao.Parent = panel3;
tongjibaobiao.WindowState = FormWindowState.Maximized;
tongjibaobiao.Show();
}
private void tjform_FormClosing(object sender, FormClosingEventArgs e)
{
_danli = null;
}