Bug 28719 - Triggers inside DataTemplate give XAML runtime error
Summary: Triggers inside DataTemplate give XAML runtime error
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 1.4.1
Hardware: PC Windows
: Highest critical
Target Milestone: ---
Assignee: Stephane Delcroix
Depends on:
Reported: 2015-04-03 05:28 UTC by Tibor Ebner
Modified: 2015-07-20 09:45 UTC (History)
13 users (show)

Tags: AC
Is this bug a regression?: ---
Last known good build:

Error still exists in Xamarin.Forms 1.4.3-pre3 (484.45 KB, application/octet-stream)
2015-06-17 05:55 UTC, Nicolas Hotterbeekx

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Description Tibor Ebner 2015-04-03 05:28:12 UTC
The title tells it all: it is not possible to use triggers (data triggers or multi-triggers at least) in a DataTemplate element in XAML. Runtime error given: 'The Property TargetType is required to create a Xamarin.Forms.DataTrigger object.'

More info:
Comment 1 Jeremy Herbison 2015-04-07 14:09:52 UTC
I can confirm this issue. The following inside a datatemplate does not work, with the specified error:

                <Image Grid.Row="0" Grid.Column="0">
                    <DataTrigger TargetType="Image" Binding="{Binding IsSelected}" Value="False">
                      <Setter Property="Source" Value="Add.png" />
                    <DataTrigger TargetType="Image" Binding="{Binding IsSelected}" Value="True">
                      <Setter Property="Source" Value="Remove.png" />
Comment 2 Nicolas Hotterbeekx 2015-06-17 05:55:55 UTC
Created attachment 11643 [details]
Error still exists in Xamarin.Forms 1.4.3-pre3
Comment 3 Jason Smith [MSFT] 2015-06-18 03:58:28 UTC
The new reproduction will be fixed in 1.4.3 final
Comment 4 Parmendra Kumar 2015-07-20 09:45:35 UTC
I have checked this issue with Xamarin.Forms 1.4.4-pre2 and its working fine at my end.

Hence closing this issue.