Groups

rbuser

Hallo.. I've this problem:

I've to Enable-Disable a GroupBand at runtime..
How can I do?

Raf

digitalmetaphors

You can disable or reanable the group be setting it's report property, ie.

ppReport.Group[0].Report:= nil;

--
Cheers,

Alexander Kramnik
Digital Metaphors

rbuser

If I remove the group by setting the report property it's all OK but..
if i reanable the group when i call the print method of the report
it raise an exception...how can I do?

Raf

"Alexander Kramnik (Digital Metaphors)" ha

digitalmetaphors

What exception are you receiving? Make sure you store the reference to the
group object property because once you set the group's Parent property to
nil you can't access it though the Report.Group property anymore.

--
Cheers,

Alexander Kramnik
Digital Metaphors

rbuser

I receive a EPrintError exception...

I Disable my Group by setting the Report property of the Group:

MyReport.Groups[0].Report:=nil;

..but if I reanable the group:

MyGroup.Report:=MyReport;

Raf.


"Alexander Kramnik (Digital Metaphors)" ha

rbuser

I Disable my Group by setting the Report property of the Group:

MyReport.Groups[0].Report:=nil;

I print the report..It's all OK....

I reanable the group:

MyGroup.Report:=MyReport;

I print the report..It's all OK....

I Re-Disable my Group...

MyReport.Groups[0].Report:=nil;

I print the report and it raise an EPrintError

Raf

digitalmetaphors

There is a group object on the form, ppGroup1 for example. Instead of trying
to nil its report property, you should set the group header and footer bands
to visible = False and set the group StartNewPage property to False.


Cheers,

Jim Bennett
Digital Metaphors

rbuser

..it's the same ... I disable the group and print...all ok...
I reanable the group and print..all ok...
I re-disable the group and print ... it raise an exception EPrintError.

ppgroup1.HeaderBand:=nil;
ppgroup1.FooterBand:=nil;
ppreport1.Print; //all ok
....
ppgroup1.HeaderBand:=myGroupHeader;
ppgroup1.FooterBand:=myGroupFooter;
ppreport1.Print; // all ok
....
ppgroup1.HeaderBand:=nil;
ppgroup1.FooterBand:=nil;
ppreport1.Print; // EPrintError

...and this way is wrong because when I disable the group
I've to print from different query that haven't the field
ppGroup1.FieldName..
so.. if I solve the error..EPrintError ...I have another error... Field not
Found..

Raf

PS. Excuse me for my bad english.

digitalmetaphors

Don't nil out the bands or groups, just set their visible properties. The
bands won't generate if they aren't visible. You can leave the group
attached to the report, you just need to set the group object's properties
so that it won't start a new page or new column, or keep together when the
report runs. To re-enable the grouping, you can set the group heeader and
footer bands to visible = true, and reset the group properties back to true,
such as Group1.KeepTogether := True.


Cheers,

Jim Bennett
Digital Metaphors