Single property, multiple fields

Grids for WPF Forum

Posted 9 years ago by Phillip OShea
Version: 10.2.0531
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I have a value type I want edited in the PropertyGrid, lets say, struct Point( float X, float Y, float Z ). The editable component of the entry should be 3 TextBox controls which bind to the X, Y and Z values of the property:

[ X ] [ Y ] [ Z ], not just [ X, Y, Z ]

If I setup each TextBox binding like so:
Text="{Binding Value.X, RelativeSource={RelativeSource AncestorType={x:Type Primitives:IPropertyDataAccessor}}, Mode=TwoWay}"

The initial values resolve ok, but I cannot change the value and have the actual property update.

Thoughts?

Comments (1)

Posted 9 years ago by Actipro Software Support - Cleveland, OH, USA
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Hi Phillip,

You don't give the full definition of your struct, but Bindings don't work well with fields. They are meant to be used with properties. This article explains this better: http://stackoverflow.com/questions/842575/why-does-wpf-support-binding-to-properties-of-an-object-but-not-fields

When using PropertyGrid.SelectedObject(s), we have some special handling for structs. Specifically, when one of the "fields/properties" change we construct a new instance of the struct using the new value for the given field/property. This allows immutable structs to be presented and changed in the PropertyGrid.

You may end up having to do something similar. If you can put together a small sample project with what you have and email it to our support address, then we can take a closer look.


Actipro Software Support

The latest build of this product (v2019.1 build 0681) was released 18 days ago, which was after the last post in this thread.

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