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C/AL (Client/server Application Language) is the programming language used within C/SIDE the Client/Server Integrated Development Environment in Microsoft Dynamics NAV (Formerly known as Navision Attain). C/AL is a Database specific programming language, and is primarly used for retrieving, inserting and modifying records in a Navision database. C/AL resembles the Pascal language on which it is based. The original C/AL compiler was written by Michael Nielsen.
This is the classic Hello World example. Since the C/SIDE (Client/Server Integrated Development Environment) does not have a console to output text, this example is made using a dialog box as the visual interface.
Filtering and retrieving record
Variables in C/AL are not defined through code, but are defined via the variable declaration menu in the C/AL editor. In this example Item is assumed to be a variable of type Record.
IF Item.GET('31260210') THEN MESSAGE(STRSUBSTNO('Item name is: %1',Item.Description)); Item.RESET; Item.SETRANGE("No.",FromItem,ToItem); Item.FINDLAST;
Looping and data manipulation
Looping over a recordset and modifying the individual records is achieved with only a few lines of code.
Item.RESET; Item.SETRANGE("Blocked",TRUE); IF Item.FINDSET THEN REPEAT IF Item."Profit %" < 20 THEN BEGIN Item."Profit %" := 20; Item.MODIFY(TRUE); END; UNTIL Item.NEXT = 0; Item.MODIFYALL("Blocked",FALSE);
- Studebaker, David, "Programming Microsoft Dynamics NAV 2009," p. 8 (2009)
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