Hierarchical data issues | Infragistics Forums

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Hierarchical data issues

Fintan posted over 15 years ago

A couple of issues I would like to get feedback / workarounds for (using WPF v.9.1.20091.1006):

1. I have the FieldLayoutSetting set as follows:

ExpansionIndicatorDisplayMode="CheckOnDisplay"

However if the top level collection contains items with multiple child collections, then this does not work as expected. All the expansion indicators are left visible with the default '+'. If you have only a single child collection then all works as expected and only the items with a non-empty child collection display the expansion indicator.

2. It appears that the description for a layout only shows if there are multiple sibling collections per parent. (see attached pic). I would like to have the description always show. Is there a way to accomplish this?

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Fintan posted over 15 years ago in reply to John Doe

Brilliant! Just what I was looking for. Thanks.
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John Doe posted over 15 years ago in reply to John Doe

Fintan,

I suppose setting the

FieldSettings - > ExpandableFieldRecordHeaderDisplayMode="AlwaysDisplayHeader" will give you the desired effect you are looking for regarding the label of the expandable field?

Alex.
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John Doe posted over 15 years ago in reply to Fintan

Fintan,

I see your point - this may lead to some inconsistencies in the look and feel of your application and it is best to have some more built-in options for you to choose from.

You can submit it (or both) as a feature request here and we will try to include this in the future releases.

Regards,

Alex.
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Fintan posted over 15 years ago in reply to John Doe

Thanks for looking in to this Alex.

These behaviors may be intentional, but they may not be desired (by IG customers ;-)

1. Regarding labels: I want the ability to customize this behavior. If I have a mix of multiple children/single children then having this 'default' behavior makes my UI look choppy. I would like options to 1) always show, 2) never show, 3) default behavior.

2. Regarding expansion indicator: Seems to me that the behavior should be consistant regardless of the number of child collections. If no child collection contains items then do not show the expander. If any child collection has an item, then show the expander. I will investigate manually handing this, but since I am not using events (using the MVVM pattern, I will need to encapsulate in an attached behavior).

Can #1 be at least added as a request (and preferably both)?

TIA

Fintan
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John Doe posted over 15 years ago in reply to Fintan
These behaviors are both intentional and the reasons for this are:

Regarding the expansion indicator:

If you have only 1 expandable field in the field layout, records that are the contents of that expandable field are shown as direct children by default. Therefore, the expansion indicator is not visible.

If you have multiple expandable fields in the field layout, the expansion indicator has to be always shown because the data from each expandable field record must be kept separate. So the children of the root record are the expandable field records and since there will always be expandable field records the expansion indicator will always be needed. Whether those expandable field records have any children only determines whether the expandable field record’s expansion indicator will show.

One way around this that we suggest is to handle the InitializeRecord event and check if you have children records in the expandable fields and set the ExpansionIndicatorVisibility to the appropriate value.

Regarding the Labels:

Situation is the same with the first bullet. By default, if there is only one expandable field, the content(records) is shown as direct children within the XamDataGrid.

Regards,

Alex.
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