Silverlight nested RadGridView SelectedItem DataContext
- by Ciaran
Hi,
I'm developing a Silverlight 4 app and am using the 2010 Q1 release 1 RadGridView. I'm developing this app using the MVVM pattern and trying to keep my codebehind to a minimum.
On my View I have a RadGridView and this binds to a property on my ViewModel. I am setting a property via the SelectedItem. I have a nested RadGridView and I want to set a property on my ViewModel to the SelectedItem but I cannot. I think the DataContext of my nested grid is the element in the parent's bound collection, rather than my ViewModel. I can easily use codebehind to set my ViewModel property from the SelectionChanged event on the nested grid, but I'd rather not do this. I have tried to use my viewModelName in the ElementName in my nested grid to specify that for SelectedItem, the ViewModel is the DataContext, but I cannot get this to work. Any ideas?
Here is my Xaml:
<grid:RadGridView
x:Name="master"
ItemsSource="{Binding EntityClassList, Mode=TwoWay}"
SelectedItem="{Binding SelectedEntityClass, Mode=TwoWay}"
AutoGenerateColumns="False"
>
<grid:RadGridView.Columns>
<grid:GridViewSelectColumn></grid:GridViewSelectColumn>
<grid:GridViewDataColumn DataMemberBinding="{Binding Description}" Header="Description"/.
</grid:RadGridView.Columns>
<grid:RadGridView.RowDetailsTemplate>
<DataTemplate>
<grid:RadGridView
x:Name="child"
ItemsSource="{Binding EntityDetails, Mode=TwoWay}"
SelectedItem="{Binding DataContext.SelectedEntityDetail, ElementName='RequestView', Mode=TwoWay}"
AutoGenerateColumns="False"
>
<grid:RadGridView.Columns>
<grid:GridViewSelectColumn></grid:GridViewSelectColumn>
<grid:GridViewDataColumn DataMemberBinding="{Binding ServiceItem}" Header="Service Item" />
<grid:GridViewDataColumn DataMemberBinding="{Binding Comment}" Header="Comments" />
</grid:RadGridView.Columns>
</grid:RadGridView>
</DataTemplate>
</grid:RadGridView.RowDetailsTemplate>
</grid:RadGridView>
