Import from CSV (Comma Delimited) file with X++

To Import data from CSV file "Comma Delimited" for example inventory journal transactions use the below code assuming the csv file include data as the following table:
Item IDSiteWarehouseQty.Unit Price
10000001MainRM15120
static void ImportfromCSV(Args _args)
{
    Dialog      dialog  = new Dialog();
    DialogField dialogField;
    AsciiIo importFile;
    str filePath,fileNameOnly;
    filetype type;
    container record;
    str         Delimiter = ",";
    int totalRecords;
   
    InventDim               InventDim;
    InventJournalTable      journalTable;
    InventJournalTrans      journalTrans;
    InventJournalTableData  journalTableData;
    InventJournalTransData  journalTransData;
   
    dialogField=dialog.addField(extendedTypeStr(FilenameOpen),"Select File","Select file to import");
    dialog.caption("File Picker");
    dialog.filenameLookupFilter(['csv','*.csv']);
    if(!dialog.run())
        return;
    [filePath, fileNameOnly, type] = fileNameSplit(dialogField.value());
    importFile = new AsciiIo(dialogField.value(), 'R');
    if((!importFile) || (importFile.status() != IO_Status::Ok))
    {
        warning("Error in opening import file");
        throw(Exception::Error);
    }
    importFile.inFieldDelimiter(Delimiter);
    if((!importFile) || (importFile.status() != IO_Status::Ok))
    {
        warning("Error in opening log file");
        throw(Exception::Error);
    }
    try
    {
        ttsbegin;
        journalTableData = JournalTableData::newTable(journalTable);
        journalTransData = journalTableData.journalStatic().newJournalTransData(journalTrans,journalTableData);
        journalTable.clear();
        journalTable.JournalId = journalTableData.nextJournalId();
        journalTable.JournalType = InventJournalType::Movement;
        journalTable.JournalNameId = journalTableData.journalStatic().standardJournalNameId(journalTable.JournalType);
        journalTableData.initFromJournalName(journalTableData.journalStatic().findJournalName(journalTable.JournalNameId));
        journalTable.insert();
       
        record = importFile.read();
        while(importFile.status() ==  IO_Status::Ok)
        {
            record = importFile.read();
            if(!record)
                break;
            totalRecords = totalRecords + 1;
            journalTrans.clear();
            journalTransData.initFromJournalTable();

            journalTrans.TransDate          = today();
            journalTrans.ItemId             = conPeek(record,1);
            journalTrans.Qty                = conPeek(record,4);
            journalTrans.CostPrice          = conPeek(record,5);
            journalTrans.CostAmount         = JournalTrans.Qty * JournalTrans.CostPrice;
           
            // Dimension details
            inventDim.clear();
            inventDim.InventLocationId  = conPeek(record,2);
            inventDim.InventSiteId      = conPeek(record,3);
            journalTrans.InventDimId = InventDim::findOrCreate(inventDim).inventDimId;
           
            journalTransData.create();
        }
        ttscommit;
    }
    catch(Exception::Error)
    {
        Throw(Exception::Error);
    }
    info(strFmt("Total Read Records = %1",totalRecords));
}

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