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