void ShowData()
{
listGudang.Items.Clear();
Koneksi.FillListItem("Select * From tb_gudang", listGudang, 1);
idGudang = Koneksi.GetSkippedID("Select * From tb_gudang", 0, listGudang.Items.Count);
}
void PopulateData()
{
listKeuangan.Items.Clear();
Koneksi.FillListItem("Select * From tb_keuangan", listKeuangan, 1);
id_keuangan = Koneksi.GetSkippedID("Select * From tb_keuangan", 0, listKeuangan.Items.Count);
}