added BT documentation

Author: stephanstapel

ZUGFeRD/InvoiceDescriptor22Writer.cs

@@ -255,18 +255,17 @@ public override void Save(InvoiceDescriptor descriptor, Stream stream)
                     } // !foreach(document)
                     #endregion
 
-                    #region GrossPriceProductTradePrice (Comfort, Extended, XRechnung)                 
-                    // BT-148
+                    #region GrossPriceProductTradePrice (Comfort, Extended, XRechnung)                    
                     if (tradeLineItem.GrossUnitPrice.HasValue || (tradeLineItem.GetTradeAllowanceCharges().Count > 0))
                     {
-                        Writer.WriteStartElement("ram:GrossPriceProductTradePrice", Profile.Comfort | Profile.Extended | Profile.XRechnung1 | Profile.XRechnung);
-                        _writeOptionalAmount(Writer, "ram:ChargeAmount", tradeLineItem.GrossUnitPrice, 2);
+                        Writer.WriteStartElement("ram:GrossPriceProductTradePrice", Profile.Comfort | Profile.Extended | Profile.XRechnung1 | Profile.XRechnung); 
+                        _writeOptionalAmount(Writer, "ram:ChargeAmount", tradeLineItem.GrossUnitPrice, 2);   // BT-148
                         if (tradeLineItem.UnitQuantity.HasValue)
                         {
                             _writeElementWithAttribute(Writer, "ram:BasisQuantity", "unitCode", tradeLineItem.UnitCode.EnumToString(), _formatDecimal(tradeLineItem.UnitQuantity.Value, 4));
                         }
 
-                        foreach (TradeAllowanceCharge tradeAllowanceCharge in tradeLineItem.GetTradeAllowanceCharges())
+                        foreach (TradeAllowanceCharge tradeAllowanceCharge in tradeLineItem.GetTradeAllowanceCharges()) // BT-147
                         {
                             Writer.WriteStartElement("ram:AppliedTradeAllowanceCharge");
 
@@ -312,7 +311,7 @@ public override void Save(InvoiceDescriptor descriptor, Stream stream)
                     #region NetPriceProductTradePrice                    
                     //Im Nettopreis sind alle Zu- und Abschläge enthalten, jedoch nicht die Umsatzsteuer.
                     Writer.WriteStartElement("ram:NetPriceProductTradePrice", Profile.Basic | Profile.Comfort | Profile.Extended | Profile.XRechnung1 | Profile.XRechnung);
-                    _writeOptionalAmount(Writer, "ram:ChargeAmount", tradeLineItem.NetUnitPrice, 2);
+                    _writeOptionalAmount(Writer, "ram:ChargeAmount", tradeLineItem.NetUnitPrice, 2); // BT-146
 
                     if (tradeLineItem.UnitQuantity.HasValue)
                     {