Behaviors in UWP (Event trigger command error

Question

SCENERIO:

I have a custom control where the control template has a grid. I want to add a behavior to the grid tapped event.

WHAT I HAVE DONE:

I have installed the Nuget package for managed UWP behaviors

Install-Package Microsoft.Xaml.Behaviors.Uwp.Managed

In the custom control's resource dictionary, I have the following xml namespaces referenced along with other necessary namespaces

xmlns:i="using:Microsoft.Xaml.Interactivity"
xmlns:core="using:Microsoft.Xaml.Interactions.Core"

Then in the custom control, in the grid block, I have the following

<i:Interaction.Behaviors>
   <core:EventTriggerBehavior EventName="Tapped">
       <core:InvokeCommandAction Command="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=CustomCommand}"/>
    </core:EventTriggerBehavior>
 </i:Interaction.Behaviors>

ISSUES:

The core:InvokeCommandAction has the blue squiggly line with this error

The type EventTriggerBehavior does not support direct content

STEPS TO REPRODUCE:

Create a custom control. Nothing special,maybe just a grid. Add the EventTriggerBehavior as shown above to the grid. Use the created control on a page in your application

This right here is where I'm stuck at. I've done a lot of Google searches and just can't find a way out of this error. Any help and code correction will be appreciated

Community · Accepted Answer · 2020-06-20 09:12:55Z

1

The core:InvokeCommandAction has the blue squiggly line with this error

The type EventTriggerBehavior does not support direct content

I made a basic demo and reproduced this problem. It is a XAML Designer issue. After building the project, this error is gone. So please make sure your codes are correct and go ahead build your project.

edited Jun 20, 2020 at 9:12

CommunityBot

11 silver badge

answered Nov 3, 2016 at 8:28

Elvis Xia - MSFT

10.9k1 gold badge15 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

MRainzo Over a year ago

when I do a clean+build the squiggly vanishes but the custom control has an H RESULT e_fail error. So please can you try creating a custom control, maybe just a grid. And adding the behavior to it then applying the control to a page to see if you can reproduce the issue there. Maybe I should update my question wirh that

Elvis Xia - MSFT Over a year ago

I did,I created a Templated Control, added a grid in the xaml with EventTrigger inside. And I used it in the main page. but I didn't have the error. Could you please share a basic demo that can reproduce this problem?

MRainzo Over a year ago

Okay, I will update the question when I get home which will be in a couple of hours

MRainzo Over a year ago

I can confirm that after I restarted the project (copied the files from the old project to a new one and deleted the old one), your answer works. So I'm accepting your answer as it solves the issue

Collectives™ on Stack Overflow

Behaviors in UWP (Event trigger command error

1 Answer 1

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related