In x++, How can I sum the numerical values of the different customers I have chosen? - axapta

Question

How can I sum the numerical values of the different customers I have chosen?
For example:
e006-M000021 total amount = 1,605.00+1605.00+1605.00+(-96.00)+...
e006-M000022 total amount = 5,964.85+(-1,075.00)+5.541.60+...
I will use the result as follows;
These records are also in my caller form. After selecting these records, I want the textbox in the new form I opened with the button to be
e006-M000021 total amount = XXX,
e006-M000022 total amount = XXX.
Now I can transfer the selected record and the values of the record to the textbox in the called form. But I am not able to sum the amounts corresponding to multiple and customer IDs.
My called form init method code:
public void init()
{
super();
if( element.args() && element.args().dataset() == tableNum(ARCSendSmsCustomerTmp))
{
Callertmp = element.args().record();
}
////username and password are pulled from dealer parameters.
ARCDealerSmsParameters = ARCDealerSmsParameters::find();
ctrlUsername.text(ARCDealerSmsParameters.DealerUsername);
ctrlPassword.text(ARCDealerSmsParameters.DealerPassword);
ctrlSmsText.text(strFmt( #'SAYIN %1, %2 tarihi itibari ile toplam %3 TL gecikmiş ödemeniz bulunmaktadır.',Callertmp.CustName,Callertmp.DueDate,Callertmp.CurrencyAmount));
ctrlPhoneNumber.text(Callertmp.CustPhone);
}

Answer 1

You can do this using the multiselection design pattern.
public void init()
{
ARCSendSmsCustomerTmp tmp;
ARCSendSmsCustomerTmp callertmp = element.args().record();
FormDataSource fds = callertmp.datasource();
Amount amount;
super();
for (tmp = fds.getFirst(1) ? fds.getFirst(1) : fds.cursor(); fds; fds = fds.getNext())
{
amount += tmp.CurrencyAmount;
}
////username and password are pulled from dealer parameters.
ARCDealerSmsParameters = ARCDealerSmsParameters::find();
ctrlUsername.text(ARCDealerSmsParameters.DealerUsername);
ctrlPassword.text(ARCDealerSmsParameters.DealerPassword);
ctrlSmsText.text(strFmt("SAYIN %1, %2 tarihi itibari ile toplam %3 TL gecikmiş ödemeniz bulunmaktadır.", Callertmp.CustName, Callertmp.DueDate, amount));
ctrlPhoneNumber.text(Callertmp.CustPhone);
}