WPF Trigger binding to MVVM property

Try removing "Image" part from Property="Image.Visibility" so you'll have:

<Setter Property="Visibility" Value="Hidden"/> 

and add TargetType to your Style:

<Style TargetType="{x:Type Image}"> 

I just did something similar using a ContentControl.

<ContentControl Content="{Binding CurrentListHasPendingChanges}"> <ContentControl.ContentTemplate> <DataTemplate> <Image x:Name="img" Source="..\Images\List_16.png" Margin="0,0,5,0" Visibility="Hidden" /> <DataTemplate.Triggers> <DataTrigger Binding="{Binding}" Value="False"> <Setter Property="Image.Visibility" Value="Visible" /> </DataTrigger> </DataTemplate.Triggers> </DataTemplate> </ContentControl.ContentTemplate> </ContentControl> 

From http://karlhulme.wordpress.com/2007/03/06/using-a-contentcontrol-and-datatemplate-to-indicate-new-andor-modified-data/

In my opinion we not need to use Triggers, with only the Binding it works well. To make binding to a property model, you can use BooleanToVisibilityConverter Is declared as follows:

<UserControl.Resources> <BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/> </UserControl.Resources> 

And how to use it is simple, just point to the key stated above:

<Image HorizontalAlignment="Left" Height="16" VerticalAlignment="Center" Width="16" Visibility="{Binding HasError, Converter={StaticResource BooleanToVisibilityConverter}}" Source="/myPath;component/Resources/Images/image1.png"/> 

The property in the ViewModel:

private bool _hasError = false; public bool HasError { get { return !string.IsNullOrEmpty(_messageError); } set { _hasError = value; this.NotifyOfPropertyChange(() => this.HasError); } }