X++ code to export the file from AX

static void RB_ExportAs_csvFileCommaIo(Args _args)
{
CommaIo fileOut;
//based on the extension it will export the file from AX .
FileName fileName = "c:\\Customers.csv";
CustTable custTable;
;
#File

fileOut = new CommaIo(filename, #io_write);

if (fileOut)
{
while select custTable
{
fileOut.write(custTable.accountNum,
custTable.name,
custTable.custGroup,
custTable.currency);
}
}
}