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How to validate movement from row to row in a grid?
Message
From
08/07/1999 13:31:47
 
 
General information
Forum:
Visual FoxPro
Category:
Classes - VCX
Miscellaneous
Thread ID:
00237681
Message ID:
00238976
Views:
12
>How to validate movement from row to row in a grid?
>In BROWSE we have WHEN clause, but in a grid...
>
>May be decision is in usage of BeforeRowColChange and AfterRowColChange events, but it seems that in this events we don't know if movement is from row to row or from column to column.
>
>I decided this problem partially with new property and some checking.
>
>Please help.
>Nik

Nikolay,

I use the afterrowcolchange event, and maintain a property that holds the last row. I check to see if the activerow property of the grid is different from the stored row, if it is then we do something otherwise we ignore it. The code from the afterrowcolchange event follows;

LPARAMETERS ncolindex

IF THIS.ACTIVEROW # THIS.PARENT.lastgridrow

IF odao.isbufferdirty(THIS.RECORDSOURCE,THISFORM.DATASESSIONID)
(NOTE: odao is a global data manipulation object we use throughout)

cmsg = "Save changes to " + ALLTRIM(rvwpubprofile.pubname) + " ?"
nretval = MESSAGEBOX(cmsg ,mb_yesno+mb_iconquestion ;
,"User confirmation required")

DO CASE

CASE nretval = idyes
THISFORM.cmdgridsave.CLICK()

CASE nretval = idno
THISFORM.cmdgridabort.CLICK()

ENDCASE

ENDIF

THIS.PARENT.pubprof.loaddata(rvwvpabclist.ctrl_pubn)

ENDIF

THIS.PARENT.lastgridrow = THIS.ACTIVEROW

There are other ways to do what we're after here, which is to check the buffer of the row in the view and force the user to save or abort changes in the grid.

Regards,

Jason
Jason Tryon
Senior Systems Analyst / Technical Lead
eBusiness / iPage
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