How to expand only one level of nested objects?

Grids for WPF Forum

Posted 13 years ago by Duncan Woods
Version: 11.1.0545

I have a nested object hierarchy e.g.


Where each level might be an object or an expandable collection.


I would like to show the selected object and then allow just one level below this to be expandable. Anything deeper that one level below the selected object should be hidden. I want to be able to set any of A, B, C or D as the selected object and still have just one level belwo the chosen object as expandable.

With different selected objects, this would mean the user would see e.g.







Could I control the depth of visible expandable objects at run-time?


[Modified at 08/12/2011 10:55 AM]

[Modified at 08/12/2011 10:59 AM]

Comments (2)

Posted 13 years ago by Actipro Software Support - Cleveland, OH, USA
Hi Duncan,

To accomplish this, you would probably have to use a custom datafactory, such as on that derives from TypeDescriptorFactory. When the factory's GetProperties(object, DataFactoryOptions) method is called for sub-properties, you can return null when appropriate. The second parameter passed in is for options, which allows access to the parent, if there is one.

There is a "Factories" documentation topic that gives some information about factories, and the two "Selective" QuickStarts show usage of custom data factories.

Actipro Software Support

Posted 13 years ago by Duncan Woods
Awesome, thanks. I'll let you know how I get on.
The latest build of this product (v24.1.2) was released 1 month ago, which was after the last post in this thread.

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