I need some help

[multitone]

Apologies if this is really obvious but I'm relatively new to csharp.
On the TaxCategoryCodes if I wanted to switch the code how would I do it I'm currently getting an error
var TaxCatCode = new TaxCategoryCodes();
switch (TaxCode[A])
{
case "STD":
{
TaxCatCode = "S";
break;
}
case "ECP":
{
TaxCatCode = TaxCategoryCodes.K;
break;
}
case "BAU":
{
TaxCatCode = TaxCategoryCodes.AE;
break;
}
case "HAR":
{
TaxCatCode = TaxCategoryCodes.E;
break;
}
}

desc.AddTradeLineItem(lineID: InvcLine[A].ToString(), InvcPartNum[A], InvcLineDesc[A], UOM, UnitQty[A],
LineGrossAmt[A], UnitPrice[A], UnitQty[A], TotalLinePrice[A], TaxTypes.VAT, TaxCatCode, LineTaxPercent[A],
LineComment[A], null, "", "", null, null, null, null, BillStart, BillEnd);

Again apologies if it's a noob question but I'm not sure how else to change it based on the case

[multitone]

Ok apologies I was being a noob I've figured it out

[stephanstapel]

Would you mind sharing your solution so that everyone can benefit?

[multitone]

var TaxCatCode = new TaxCategoryCodes();
foreach (ref int Lines in InvcLine.AsSpan())
{
switch (TaxCode[A])
{
case "STD":
{
TaxCatCode = TaxCategoryCodes.S;
break;
}
case "ECP":
{
TaxCatCode = TaxCategoryCodes.K;
break;
}
case "BAU":
{
TaxCatCode = TaxCategoryCodes.AE;
break;
}
case "HAR":
{
TaxCatCode = TaxCategoryCodes.E;
break;
}
case "LOWER":
{
TaxCatCode = TaxCategoryCodes.AA;
break;
}
case "ZERO":
{
TaxCatCode = TaxCategoryCodes.Z;
break;
}
} // End of Switch
desc.AddTradeLineItem(lineID: InvcLine[A].ToString(), InvcPartNum[A], InvcLineDesc[A], unitCode: UOM, UnitQty[A],
LineGrossAmt[A], UnitPrice[A], UnitQty[A], TotalLinePrice[A], TaxTypes.VAT, categoryCode: TaxCatCode, LineTaxPercent[A],
LineComment[A], null, "", "", null, null, null, null, BillStart, BillEnd);

so I just needed to use categoryCode: and then my variable TaxCatCode it's really obvious now but I have learnt something new today, which is good because I am self taught. Thank you for this wonderful tool :)