Rec and xRec how to use

(0) Share

Report

Posted on by Belarmino Vicenzo

I want to print the Instructor Name for the selected record when I open the page.
And I have those two system variables Rec and xRec, that seems work the same way.
I was reading stuff, but the only useful info I found was this https://www.oreilly.com/library/view/programming-microsoft-dynamics/9781786468192/35ee3208-3f84-40b0-931e-bb438b49a1eb.xhtml

The page says "Rec represents the current record data in process and xRec represents the record data before it was modified."
That is simple to understand, but it's just too vague for me to comprehend .

In the first and third piece of code I have the same result each time.
In the second piece, I got a different result according the one I'm clicking.

If isn't asking too much, I would like for someone to explain why those results are happening, which one should I use in similar attempts
and if possible, very simple examples of both

I'm a NAV starter, I came from a C# background so OOP explanations can also help

PS: The FINDFIRST isn't important (I think it's not perfectly used,) I just put there because I don't know yet a way to know if there's records, so I figured out that if there's record there's at least one record FINDFIRST would work

OnOpenPage()

IF Rec.FINDFIRST = TRUE THEN 
BEGIN


MESSAGE(FORMAT(Rec."Instructor Name"));
END
ELSE




OnOpenPage()


IF xRec.FINDFIRST = TRUE THEN 
BEGIN


MESSAGE(FORMAT(Rec."Instructor Name"));
END
ELSE

// or 

IF xRec.FINDFIRST = TRUE THEN 
  BEGIN
    //texto:= Rec.GETFILTER("Formation Code");
    
    MESSAGE(FORMAT(xRec."Instructor Name"));
    END
    ELSE

All responses (5)

Answers (0)

Suggested answer

Nitin Verma 21,091 Super User 2024 Season 1 on at

Like (1)

Report

RE: Rec and xRec how to use

Rec represents the current record data in process and xRec represents the record data before it was modified.

So use always Rec.Findfirst until you require your last value (before modification)

Cheers!
Belarmino Vicenzo 70 on at

Like (0)

Report

RE: Rec and xRec how to use

[quote user="Nitin Verma"]
Ok

IF FINDFIRST THEN

MESSAGE('%1',"Instructor Name");

It will display FIRST RECORD name.
[/quote]

What does this code MESSAGE('%1',"Instructor Name"); means

I don't need to get the first value or other value, bro. That's just a simple code that I wrote to use Rec and xRec
Just that, I know what happens, but I don't know why
I want to know why my two similar codes work different, I want an explanation about my code, how /when to use Rec and xRec.
Suggested answer

Nitin Verma 21,091 Super User 2024 Season 1 on at

Like (0)

Report

RE: Rec and xRec how to use

Ok

IF FINDFIRST THEN

MESSAGE('%1',"Instructor Name");

It will display FIRST RECORD name.
Belarmino Vicenzo 70 on at

Like (0)

Report

RE: Rec and xRec how to use

[quote user="Nitin Verma"]
One Quick questions:

1. Is this list page or Card page?
[/quote]
It's a List page, but the message is showing on opening the Card page
Nitin Verma 21,091 Super User 2024 Season 1 on at

Like (0)

Report

RE: Rec and xRec how to use

One Quick questions:

1. Is this list page or Card page?