private void addBarcode()
{
if (string.IsNullOrEmpty(txtBarcode.Text))
{
return;
}
string barcode = InventoryItem.getBarcodeWithoutPrefix(txtBarcode.Text.Trim());
if (!InventoryItem.isBarcodeExist(barcode))
{
Tools.hasMessage(barcode.ToString() + " is not found in database");
}
else if (InventoryItem.isBarcodeValidForSale(barcode))
{
Tools.hasMessage(barcode.ToString() + " has not been sold yet");
}
else
{
DataTable dt;
if (grid.DataSource == null)
{
dt = SaleItem.getItemForReturn(barcode);
if (dt.Rows[0][SaleItem.COL_CUSTOMERID] != DBNull.Value)
{
_customerID = (Guid)dt.Rows[0][SaleItem.COL_CUSTOMERID];
lblCustomerName.Text = dt.Rows[0][SaleItem.COL_CUSTOMERNAME].ToString();
}
else
{
_Vendors_Id = (Guid)dt.Rows[0][SaleItem.COL_DB_Vendors_Id];
lblCustomerName.Text = dt.Rows[0][SaleItem.COL_Vendors_Name].ToString();
}
}
else
{
dt = Tools.setDataTablePrimaryKey((DataTable)grid.DataSource, SaleItem.COL_ID);
foreach (DataRow dr in SaleItem.getItemForReturn(barcode).Rows)
{
if (dt.Rows.Contains(dr[SaleItem.COL_ID]))
{
Tools.hasMessage(dr[SaleItem.COL_BARCODE].ToString() + " is already in the list");
}
else if (_customerID != null && (Guid)dr[SaleItem.COL_CUSTOMERID] != _customerID)
{
Tools.hasMessage(barcode.ToString() + " was sold to a different customer: " + dr[SaleItem.COL_CUSTOMERNAME].ToString());
}
else if (_Vendors_Id != null && (Guid)dr[SaleItem.COL_DB_Vendors_Id] != _Vendors_Id)
{
Tools.hasMessage(barcode.ToString() + " was returned to a different vendor: " + dr[SaleItem.COL_Vendors_Name].ToString());
}
else
{
dt.Rows.Add(dr.ItemArray);
}
}
}
grid.DataSource = dt;
recalculateNumbers();
}
txtBarcode.Text = "";
txtBarcode.Focus();
}