WPF: Condition Binding versus Property, XamlParseException using either - wpf

Question

I'm having trouble with a Condition for a MultiTrigger. If I do the following:
<Condition Binding="{Binding RelativeSource={RelativeSource
AncestorType={x:Type ListView}}}" Property="IsEnabled" Value="True"/>
Then I get this exception:
Condition cannot use both Property and Binding. Error at object 'System.Windows.Condition' in markup file
However, when I do the following:
<Condition Binding="{Binding RelativeSource={RelativeSource
AncestorType={x:Type ListView}}, Path=IsEnabled}" Value="True"/>
Then I get this exception:
Must specify both Property and Value for Trigger. Error at object 'System.Windows.Condition' in markup file
What gives? If it matters, here's the entire trigger:
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Binding="{Binding Path=IsSelected}" Value="True"/>
<Condition Binding="{Binding Path=ItemsControl.AlternationIndex}"
Value="0"/>
<Condition Binding="{Binding RelativeSource={RelativeSource
AncestorType={x:Type ListView}}, Path=IsEnabled}"
Value="True"/>
</MultiTrigger.Conditions>
<Setter Property="Background"
Value="{StaticResource evenSelected}" />
<Setter Property="BorderBrush"
Value="{StaticResource evenSelectedBorder}" />
</MultiTrigger>

Answer 1

The API in this case is confusing. Condition is used for two different types of multi-triggers, and the properties used are different. When using MultiTrigger, you will use the Property and Value properties. When using MultiDataTrigger (which is what you need), you specify a Binding and a Value. So, if you just switch your code to use a MultiDataTrigger, you'll be good to go:
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding Path=IsSelected}" Value="True"/>
<Condition Binding="{Binding Path=ItemsControl.AlternationIndex}"
Value="0"/>
<Condition Binding="{Binding RelativeSource={RelativeSource
AncestorType={x:Type ListView}}, Path=IsEnabled}"
Value="True"/>
</MultiDataTrigger.Conditions>
<Setter Property="Background"
Value="{StaticResource evenSelected}" />
<Setter Property="BorderBrush"
Value="{StaticResource evenSelectedBorder}" />
</MultiDataTrigger>