Animation triggering on property change doesn't seem to fire
I'm trying to make a status textblock that will display things like "Database updated" and other information for which a dialog would be overkill. It should flash on the screen and then fade away within 2 seconds or so. The goal is that it will sit at opacity 0 until its binding is updated, then 1 opacity and fade out. Problem is, what I came up with doesn't seem to trigger at all. Here's my code:
<TextBlock Text="{Binding AppState.Feedback}" x:Name="feedbackBlock"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="feedbackBlock"
Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
Not really sure where to start in debugging this, I don't get an error, it just doesn't show.
wpf xaml
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
add a comment |
I'm trying to make a status textblock that will display things like "Database updated" and other information for which a dialog would be overkill. It should flash on the screen and then fade away within 2 seconds or so. The goal is that it will sit at opacity 0 until its binding is updated, then 1 opacity and fade out. Problem is, what I came up with doesn't seem to trigger at all. Here's my code:
<TextBlock Text="{Binding AppState.Feedback}" x:Name="feedbackBlock"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="feedbackBlock"
Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
Not really sure where to start in debugging this, I don't get an error, it just doesn't show.
wpf xaml
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
Yes, apologies, I had moved on to a different portion of the app and finally got back to it.
– linus72982
Dec 4 '18 at 18:04
add a comment |
I'm trying to make a status textblock that will display things like "Database updated" and other information for which a dialog would be overkill. It should flash on the screen and then fade away within 2 seconds or so. The goal is that it will sit at opacity 0 until its binding is updated, then 1 opacity and fade out. Problem is, what I came up with doesn't seem to trigger at all. Here's my code:
<TextBlock Text="{Binding AppState.Feedback}" x:Name="feedbackBlock"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="feedbackBlock"
Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
Not really sure where to start in debugging this, I don't get an error, it just doesn't show.
wpf xaml
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
I'm trying to make a status textblock that will display things like "Database updated" and other information for which a dialog would be overkill. It should flash on the screen and then fade away within 2 seconds or so. The goal is that it will sit at opacity 0 until its binding is updated, then 1 opacity and fade out. Problem is, what I came up with doesn't seem to trigger at all. Here's my code:
<TextBlock Text="{Binding AppState.Feedback}" x:Name="feedbackBlock"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="feedbackBlock"
Storyboard.TargetProperty="Opacity" To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
Not really sure where to start in debugging this, I don't get an error, it just doesn't show.
wpf xaml
wpf xaml
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
asked Nov 25 '18 at 23:15
linus72982linus72982
7401022
7401022
Yes, apologies, I had moved on to a different portion of the app and finally got back to it.
– linus72982
Dec 4 '18 at 18:04
add a comment |
Yes, apologies, I had moved on to a different portion of the app and finally got back to it.
– linus72982
Dec 4 '18 at 18:04
Yes, apologies, I had moved on to a different portion of the app and finally got back to it.
– linus72982
Dec 4 '18 at 18:04
Yes, apologies, I had moved on to a different portion of the app and finally got back to it.
– linus72982
Dec 4 '18 at 18:04
add a comment |
1 Answer
1
active
oldest
votes
You haven't told the Binding to fire the TargetUpdated event. Add NotifyOnTargetUpdated=True to the Binding expression. Besides that, you don't need to set Storyboard.TargetName:
<TextBlock x:Name="feedbackBlock"
Text="{Binding AppState.Feedback, NotifyOnTargetUpdated=True}"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You haven't told the Binding to fire the TargetUpdated event. Add NotifyOnTargetUpdated=True to the Binding expression. Besides that, you don't need to set Storyboard.TargetName:
<TextBlock x:Name="feedbackBlock"
Text="{Binding AppState.Feedback, NotifyOnTargetUpdated=True}"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
add a comment |
You haven't told the Binding to fire the TargetUpdated event. Add NotifyOnTargetUpdated=True to the Binding expression. Besides that, you don't need to set Storyboard.TargetName:
<TextBlock x:Name="feedbackBlock"
Text="{Binding AppState.Feedback, NotifyOnTargetUpdated=True}"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
add a comment |
You haven't told the Binding to fire the TargetUpdated event. Add NotifyOnTargetUpdated=True to the Binding expression. Besides that, you don't need to set Storyboard.TargetName:
<TextBlock x:Name="feedbackBlock"
Text="{Binding AppState.Feedback, NotifyOnTargetUpdated=True}"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
You haven't told the Binding to fire the TargetUpdated event. Add NotifyOnTargetUpdated=True to the Binding expression. Besides that, you don't need to set Storyboard.TargetName:
<TextBlock x:Name="feedbackBlock"
Text="{Binding AppState.Feedback, NotifyOnTargetUpdated=True}"
Opacity="0" FontSize="100" Foreground="Black">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
To="1" Duration="0:0:2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
answered Nov 26 '18 at 7:11
ClemensClemens
88.4k888175
88.4k888175
add a comment |
add a comment |
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Yes, apologies, I had moved on to a different portion of the app and finally got back to it.
– linus72982
Dec 4 '18 at 18:04