silverlight master-detail with two listboxes in pure xaml with ria services throwing exception
- by Sam
Hi, I was trying to achieve master-detail with 2 ListBox, 2 DomainDataSource and a IValueConverter, when entering the page it throws the random error it does when your xaml is invalid: "AG_E_PARSER_BAD_PROPERTY_VALUE [Line: 24 Position: 61]"
Which is in fact the start position of where I am binding the listbox selected item with converter to the parameter's value of my DomainDataSource. I would love to achieve this by pure xaml, I did it by code behind and that works but I don't like it :p
When the parameter is a hard-coded integer 1, it works, so I assume it's the value binding
My code is below here, thanks in advance for at least looking :)
(taken into accound all the xmlns's & usings are correct)
Xaml:
<Grid x:Name="LayoutRoot">
<Grid.Resources>
<helpers:ListItemtoIdListValueConverter x:Key="mListConverter" />
</Grid.Resources>
<riacontrols:DomainDataSource x:Name="GetLists" DomainContext="{StaticResource DbContext}" LoadSize="20" QueryName="GetLists" AutoLoad="True" />
<riacontrols:DomainDataSource x:Name="GetListItems" DomainContext="{StaticResource DbContext}" LoadSize="20" QueryName="GetListItemsById" AutoLoad="True">
<riacontrols:DomainDataSource.QueryParameters>
<riadata:Parameter ParameterName="id" Value="{Binding ElementName=ListBoxLists, Path=SelectedItem, Converter={StaticResource mListConverter}}" />
</riacontrols:DomainDataSource.QueryParameters>
</riacontrols:DomainDataSource>
<activity:Activity IsActive="{Binding IsBusy, ElementName=ListBoxListItems}">
<StackPanel Orientation="Horizontal">
<ListBox x:Name="ListBoxLists" ItemsSource="{Binding Data, ElementName=GetLists, Mode=OneWay}" Width="150" Margin="0,0,10,10" />
<ListBox x:Name="ListBoxListItems" ItemsSource="{Binding Data, ElementName=GetListItems, Mode=OneWay}" Width="150" Margin="0,0,10,10" />
</StackPanel>
</activity:Activity>
</Grid>
IValueConverter:
public class ListItemtoIdListValueConverter: IValueConverter
{
#region IValueConverter Members
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
list mList = (list)value;
if (mList != null)
return mList.id;
else
return null;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
#endregion
}
