private void RefreshSuppliers()
{
frmMain.supplierList = null;
frmMain.supplierList = SupplierDB.ListSupplier();
PopulateTreeNode("rootSuppliers");
PopulateViewer("rootSuppliers");
}
private void mainForm_Load(object sender, EventArgs e)
{
packageList = PackagesDB.GetAll();
productList = ProductsDB.GetAll();
supplierList = SupplierDB.ListSupplier();
suppliersContactList = SupplierContactsDB.listSuppliers();
}