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EventTrigger on a TextBlock that sets a border - cannot resolve all property references

I have a user control in WPF in which I define a large ItemsControl template. There I have a Grid and in one column of this grid, I have a TextBlock, and in another column I have a Border.

I want to highlight the border when the mouse enters the TextBlock.

I tried several scenarios: first an EventTrigger in the TextBlock style, but I found out that you cannot do this, then an EventTrigger in the TextBlock trigger section, and now I just put it in the DataTemplate.Triggers of my ItemsControl, but I keep getting Error:

 "Cannot resolve all property references in the property path 'Border.BorderBrush.Color'. Verify that applicable objects support the properties."

Here is the code causing the problems:

 <DataTemplate.Triggers> <EventTrigger SourceName="mytxtblock" RoutedEvent="TextBlock.MouseEnter"> <EventTrigger.Actions> <BeginStoryboard> <Storyboard> <ColorAnimation Storyboard.TargetName="myborder" Storyboard.TargetProperty="Border.BorderBrush.Color" Duration="0:0:1" To="White" /> <ThicknessAnimation Storyboard.TargetProperty="Border.BorderThickness" Duration="0:0:1" From="0" To="1" /> </Storyboard> </BeginStoryboard> </EventTrigger.Actions> </EventTrigger> </DataTemplate.Triggers>

I think I'm missing something in the way I relate to the Color property of my border, any understanding?

Thanks!

EDIT : I realized that the SolidColorBrush in Resources and then using this value allows me to get rid of

Storyboard.TargetProperty="Border.BorderBrush.Color" , which changes to Storyboard.TargetProperty="Border.BorderBrush" ,

but now the compiler tells me that the declared color (I tried Green and Transparent) is not a valid value for "To" ...

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2 answers

Try

 <ColorAnimation Storyboard.TargetName="myborder" Storyboard.TargetProperty="BorderBrush.(SolidColorBrush.Color)" Duration="0:0:1" To="White" />

but you have to declare BorderBrush

 BorderBrush="whatever"

or

 <Border.BorderBrush> <SolidColorBrush Color="whatever" /> </Border.BorderBrush>

in your "myborder" too.

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There are two properties on your ColorAnimation :

 Storyboard.TargetName="myborder" Storyboard.TargetProperty="Border.BorderBrush.Color"

This means that myborder has a property called Border . I think this is causing your error.

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