Examples of usage:

Visibility="{Binding Path=[event:Dests], Converter={StaticResource NullValueConverter}, ConverterParameter=Collapsed:Visible}"

 

<xp:Border Visibility="{Binding Path=[folderObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=Collapsed:Visible}"

<xp:Border Visibility="{Binding Path=[linkObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=Collapsed:Visible}"

<xp:Border Visibility="{Binding Path=[archiveObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=Collapsed:Visible}"

 

<l:Hyperlink NavigateUri="{Binding Path=[budget.id], Converter={StaticResource StringFormatValueConverter}, ConverterParameter=javascript:showDialog(\'UnlockForm.aspx?ids\={0}\');}" Visibility="{Binding Path=[budget:CheckOutInfo], Converter={StaticResource NullValueConverter}, ConverterParameter=Collapsed:Visible}">

<l:Hyperlink Visibility="{Binding Path=[folderObject:CheckOutInfo], Converter={StaticResource NullValueConverter}, ConverterParameter=Collapsed:Visible}" NavigateUri="{Binding Path=[folderObject.id], Converter={StaticResource StringFormatValueConverter}, ConverterParameter=javascript:showDialog(\'UnlockForm.aspx?ids\={0}\');}">

 

<xp:TextBlock Margin="4,0,4,0" VerticalAlignment="Top" HorizontalAlignment="Center" Text="{Binding Path=[linkObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=:*}" />

 

<xp:TextBlock Margin="4,0,4,0" VerticalAlignment="Top" HorizontalAlignment="Center" Text="{Binding Path=[archiveObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=:*}" />

 

<xp:TextBlock Margin="4,0,4,0" VerticalAlignment="Top" HorizontalAlignment="Center" Text="{Binding Path=[folderObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=:*}" />

<xp:TextBlock Margin="4,0,4,0" VerticalAlignment="Top" HorizontalAlignment="Center" Text="{Binding Path=[folderObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=:*}" />

<xp:TextBlock Margin="4,0,4,0" VerticalAlignment="Top" HorizontalAlignment="Center" Text="{Binding Path=[folderObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=:*}" />

<xp:TextBlock Margin="4,0,4,0" VerticalAlignment="Top" HorizontalAlignment="Center" Text="{Binding Path=[folderObject:Referencing( pubDest.objs )], Converter={StaticResource NullValueConverter}, ConverterParameter=:*}" />