Case

Print Label on Planned Posting, i.e. Receive, Pick, Put-away, Ship, Move etc.

Proposed solution

This examples prints on posting of Warehouse Receipt Lines

• You want to print labels from the mobile device
• You want to use the integrated Cloud Print Service solution
• The label should be printed automatically when posting occurs  

Example 1: Print on Posting Warehouse Pick

    // Step 1: Add Header steps
    // In order to determine when, where and what to print, we add a step on posting
    [EventSubscriber(ObjectType::Codeunit, Codeunit::"MOB WMS Pick", 'OnPostPickOrder_OnAddStepsToAnyHeader', '', true, true)]
    local procedure OnPostPickOrder_OnAddStepsToAnyHeader(var _OrderValues: Record "MOB Common Element"; _RecRef: RecordRef; var _StepsElement: Record "MOB Steps Element")
    var
        MobPrint: Codeunit "MOB Print";
    begin
        if (_RecRef.Number() in [DataBase::"Warehouse Activity Header"]) then begin // This example is limited to Whse. Picks

            // Break when 'Printer' step has been collected to prevent infinite loop
            if _OrderValues.HasValue('Printer') then
                exit;

            _StepsElement.Create_ListStep(1, 'Printer');
            _StepsElement.Set_header('Label print');
            _StepsElement.Set_listValues(' ;' + MobPrint.GetMobilePrinters('Item Label 3x2', '')); // Allow user to also select a blank printer
            _StepsElement.Set_helpLabel('If you want a label, please select a printer.');
        end;
    end;

    // Step 2: Handle Header step and issue print
    // We read the collected step (printer)
    // Issue a print based on printer, label and the current context (Order Header)
    [EventSubscriber(ObjectType::Codeunit, Codeunit::"MOB WMS Pick", 'OnPostPickOrder_OnAfterPostAnyOrder', '', true, true)]
    local procedure MyOnPostPickOrder_OnAfterPostAnyOrder(var _OrderValues: Record "MOB Common Element"; _RecRef: RecordRef; var _ResultMessage: Text)
    var
        MobPrinter: Record "MOB Printer";
        TempPrintParameter: Record "MOB Print REST Parameter" temporary;
        MobPrint: Codeunit "MOB Print";
        MobPrintBuffer: Codeunit "MOB Print Buffer";
        PrintCommand: Text;
    begin
        // If user selected ' ' blank printer, then exit
        if _OrderValues.GetValue('Printer') = ' ' then
            exit;

        // Init printer parameters
        Evaluate(TempPrintParameter.Printer, _OrderValues.GetValue('Printer')); // Printer selected
        TempPrintParameter."Label-Template Name" := 'Item Label 3x2'; // The label to print - consider making this configurable
        MobPrint.SetSourceRecRef(_RecRef);
        MobPrint.SetRequestElementsFromOrderValues(_OrderValues);

        if MobPrint.Run(TempPrintParameter) then begin
            // Print was returned from cloud
            TempPrintParameter.GetResponseContentAsBase64Text(PrintCommand);
            MobPrint.GetPrinterFromName(MobPrinter, TempPrintParameter.Printer);
            MobPrintBuffer.Add(MobPrinter.Address, PrintCommand);

        end else
            // If failed, append Error to ResultMessage
           _ResultMessage := _ResultMessage + ' Print failed: ' + GetLastErrorText();
    end;

Step 3: Modify print "Dataset" (optional)

• Use this event to modify the automatically generated dataset OnPrintLabel_OnAfterPopulateDataset 
• See also Customize Labels

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