control break events

[former_member222933]

what is difference between AT NEW..... and ON CHANGE OF.......?

[raja_narayanan2]

At new will be used only within the loop.......endloop.

the statements below that is executed only when there is any change in the value of the particular field.

loop at <itab>

At new <field>

...........

.................

endat.

endloop.

On change of can be used within loop....endloop, select.....endselect, while, Do.

On change of v1

..........

........

End on.

The statement b/w this is executed if there is any change in the value of the field during each loop pass.

[Former Member]

hi kadam,

AT NEW FIELD:

it compares with the previous record of the onternal table whether the value is different or not. if different this event is triggered. Used only ib LOOP AT i.e., only for internal table.

ON CHANGE OF:

it creates one more variable internally and check with the variable of the internal table. if different event is triggered.

initial value should mis-match. Used in DO, WHILE, LOOP AT..

generally we dont go for on change of.

luck,

pritam.

[Former Member]

Hi,

I avoid both of those as they can cause problems. I do it with my own variables which gives me more control and doesnt hide any data!

Kind regards

Ash Thomas

Sap Consultant

<a href=http://www.ashpeople.com>Ash People, Sap Consultants & Sap Consultancy</a>

<a href=http://www.ashpeople.com>www.ashpeople.com</a>

[Former Member]

AT NEW <field> is used when the field is a first element in the structure.

(IF the field used in AT NEW is not the first element in the structure, all the character field which cross in that loop will become ***, to overcome this ON CHANGE OF is used)

ON CHANGE OF <field> is used when the <field> is not the first element in the structure.

[Former Member]

Hi,

AT NEW ONCHANGE

This is the event allowed only This is the event allowed only

with in the loop ...endloop. outside looping statements.

It considers the change in left This doesn't consider left side

side alphanumeric characters. alphanumeric characters.

Hope tis answer helps u.

Reward with points if ur question is answered.

Bye...........

Edited by: SreeRekha Myadam on Apr 8, 2008 11:05 AM

[Former Member]

Hi,

Both at new and on change are used within the loop.

But the difference is that on change will be triggered whenever the data in that particular field changes, at new is triggered whenever the data in the fields which are present before that control level changes.

[Former Member]

how to use at new and onchange control break events in ALV Programs........

thanks in advance...

[Former Member]

Hi

At new is trigger whenever there is any change in al lthe fields from the left to that of the particular field.

But On change is triggers only when there is any change in the particular field.

AT new we use with in the loop but onchange we can use outside the loop.

[Former Member]

Hi Sai

Please check this link

Hope this answer your question

Reward point if useful.

Thanks

Raziq

[Former Member]

hai,

At new and on change of both are used for displaying output.. The only difference is At new is used within the loop and On change of is used outside the loop... I hope this information may help you

[Former Member]

at new

write kunnr, mandt.

endat.

o/p 123 *** ** .

set flag

at new

flag = `x`.

endat.

if flag = 'x'.

write kunnr, mandt.

endif

123 200.

ON CHANGE on problem.