How To assign instance of Codeunit Variable.

lakshman · 2008-06-18

Hi All,

can We assign one codeunit variable the instance of another codeunit variable.

please Suggest me.

Belias · 2008-06-18

you mean:
mycu1 ---> codeunit 50000
mycu2 ---> codeunit 50000

mycu1 := mycu2;

it doesn't give you compile error, but what's the point in doing this? :-k

Waldo · 2008-06-18

Is transfers the values of the global variables of the codeunit. That could be the reason, no :-k ?

Belias · 2008-06-18

Waldo wrote:

Is transfers the values of the global variables of the codeunit. That could be the reason, no :-k ?

:? it is what i thought...but maybe i've done something wrong because it doesn't transfer global variables...
i've done this:

cu.FNTGetParTest;
cu := cu2;
cu2.FNTGetParTest;

and in cu and cu2 .fntgetpartest there is:

Par1 := Par1 + 100;
Par2 := Par2 + 200;
locpar := locpar + 555;

debugging it, when cu2.fntgetpartest is called, par1 and par2 have 0 value...am i missing something? :-k

Waldo · 2008-06-18

Yes, I think so.

try switching cu and cu2.

cu.FNTGetParTest; 
cu2 := cu; 
cu2.FNTGetParTest;

Belias · 2008-06-18

no comment... :oops:

Waldo · 2008-06-18

paska juttu

Belias · 2008-06-18

Waldo wrote:

paska juttu

what?

Waldo · 2008-06-18

Shit happens...

lakshman · 2008-06-18

Hi All,

Thanks for your Reply.

I read one pdf file like below

Codeunit Assignment:

Codeunits can be treated as objects − one codeunit variable can be assigned to another codeunit variable, which creates a new reference to the same codeunit instance. In other words, the codeunit variables then use the same set of internal variables

But i dont know how to assiagn one codeunit variable to another coudeunit variable thats why i posted it.

Waldo · 2008-06-18

Like belias said:

CU1 := CU2;

Belias · 2008-06-18

cu2 := cu;

this one!

Waldo · 2008-06-18

And it's important how it's stated.
It's not how we thought: copying over the values of the variables. It's literally how it's stated: "...which creates a new reference to the same codeunit instance. In other words, the codeunit variables then use the same set of internal variables ".

After assignment,
if changing a variable in CU1, it'll be changed in CU2 as well. It is a reference to the same thing.
So now I wouldn't know anymore why this would be useful.. :-k

kriki · 2008-06-18

Waldo wrote:

So now I wouldn't know anymore why this would be useful.. :-k

Me too. In my NAV-life, I have written a lot of (kriki-)code but I don't remember to have used this possibility once. :-k

ara3n · 2008-06-18

kriki wrote:

Waldo wrote:

So now I wouldn't know anymore why this would be useful.. :-k

Me too. In my NAV-life, I have written a lot of (kriki-)code but I don't remember to have used this possibility once. :-k

This is very useful when you are posting and need to pass CU 22 or CU 12 to your own functions. These codeunits keep track of variables e.g. LastEntryNo. etc.

So if you are inserting additional Item journal line entries or GL Entries, you can use the variable that is used in CU 80 or 90.
Btw I've used this once and worked out well.

How To assign instance of Codeunit Variable.

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