XAML Binding for relationship property

Question

hi,
I'm trying to bind a relationship property to a TextBox in a XAML form.
<ListView VerticalAlignment="Top" x:Name="listviewtest" MinHeight="350" ItemsSource="{Binding Path=componentalias, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}">
<ListView.View>
<GridView>
<GridViewColumn Header="Field1"
DisplayMemberBinding="{Binding Path=field1}"
Width="Auto" />
<GridViewColumn Header="Field2"
DisplayMemberBinding="{Binding field2}"
Width="Auto" />
<GridViewColumn Header="Field3"
Width="Auto">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Path=relationshipproperty, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
What am I missing?
thanks!

Answer 1

Sorry about that! Folks tend to use "relationship" and "property" interchangeably.
Are you using the console API (The IDataItem stuff)? If so, I'm not sure if relationship property binding is supported. The console API does have interfaces for relationship objects (in the form of the EnterpriseManagementRelationshipObjectDataType class),
however, I'm not sure how (or even if) they exist within an IDataItem or BindableCachedDataItem projection.
For reference, the windows computer form displays an Installed Software item's "Installed Date" which is a relationship property. However, the windows computer form exposes that property via a viewmodel proxy. It doesn't get the InstalledDate from
the IDataItem..instead, it queries the SDK (technically the DAS) for the relationship's properties, then loads them into the viewmodel proxy. Only one-way binding is supported though..there's no mechanism to update the installed date from the form. In
order to update a relationship property with the proxy method, you would have to update the relationship properties later via the standard SDK..which would be problematic at best (it would probably cause collisions), and would be convoluted to implement anyway.
Mixing Console API updates and SDK updates is rarely a good idea.
I'll dig into the console API a little bit and see if relationship properties/binding are supported at all. I'm curious now.