public static PositionInsert GetInstance()
{
if (diform == null || diform.IsDisposed)
{
diform = new PositionInsert();
}
return(diform);
}
private void barButtonItem新增_ItemClick(object sender, ItemClickEventArgs e)
{
PositionInsert Frm = PositionInsert.GetInstance();
Frm.TopLevel = false;
Frm.Parent = this;
Frm.Show();
Frm.BringToFront();
}