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Default Group By

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Developer Developer
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Developer Developer asked on 13 Apr 2009, 06:12 PM
The 'group by' behaviour appears to behave diferrently if defined declaratively as apposed to dragging and dropping the columns into the GridGroupPanel.

When the page first loads and I define declaritively the 'Group By' rows look like the following:

+ HomeTerminal: Buffalo; JobNumber: 222222
[row data]
[row data]
[row data]
+ HomeTerminal: Buffalo; JobNumber: 555555
[row data]
[row data]

Then I drag the items from the GridGroupPanel to clear the grouping.  Then I drag the 'Home Terminal' column to group by that column.  Then I drage the 'Job Number' column to group by that column.  The results are then:

+ Home Terminal: Buffalo
+ Job Number: 222222
[row data]
[row data]
[row data]
+ Job Number: 555555
[row data]
[row data]

Does anybody know how to get the grid to look like the second example when the page first loads?  Thank you very much for your help.


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Yavor
Telerik team
answered on 15 Apr 2009, 11:22 AM
Hi Developer,

To simulate the same behavior with the declarative group by expressions, you will need to define two separate group by expressions, one for each level of grouping. Give this suggestion a try and let me know how it goes.

Best wishes,
Yavor
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John Crowley
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answered on 20 Apr 2009, 12:47 PM
Exactly what I was looking for.  Thank you very much.
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Mark
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answered on 23 Aug 2009, 03:46 AM
Do you have a syntax example of this?  Can this be done in source as opposed to code-behind?
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Mark
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answered on 23 Aug 2009, 03:50 AM
Never mind...found it. :-)
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Duane Faithen
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answered on 08 Apr 2010, 04:17 PM

I have the opposite problem. Is ther a way to  
achieve the multi column single epression format when dragging the column headers on the client instead of
the multi expression format i.e.

HomeTerminal: Buffalo; JobNumber: 222222
    [row data]

    [row data]

Instead of

+ HomeTerminal: Buffalo
    + Job Number: 222222
        [row data]

        [row data]

Thanks,
Duane

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Yavor
Telerik team
answered on 13 Apr 2010, 08:55 AM
Hi Duane,

This nesting is not possible. The reason for this is that the groups are separated into separate lines, so that the expand/collapse operations can be handled accordingly, since these are different groups.

Greetings,
Yavor
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Duane Faithen
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answered on 13 Apr 2010, 01:04 PM
So just to be sure. The only way to achieve this is at design time? there is no way to do this in the client at runtime?
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Yavor
Telerik team
answered on 15 Apr 2010, 12:38 PM
Hi Duane Faithen,

Basically, the default grouping mechanism does not cater for this functionality.
The other option is to alter the group by expression dynamically:

http://www.telerik.com/help/aspnet-ajax/grdsetgroupbyexpressionondnd.html

In this way, you can achieve nesting like the following:

http://demos.telerik.com/aspnet-ajax/grid/examples/groupby/expressions/defaultcs.aspx

I hope this information helps.

Sincerely yours,
Yavor
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Yavor
Telerik team
answered on 15 Apr 2010, 12:40 PM
Hello Duane,

As a quick follow up on the previous setup, I wanted to add another option, which is especially useful if you are aware of the possible grouping expression(s) in advance. You can dynamically set the expression from the code behind:

http://www.telerik.com/help/aspnet-ajax/grdgroupbyprogrammaticdefinition.html

I hope one of these options is suitable for you.

All the best,
Yavor
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John Crowley
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Duane Faithen
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