Hi iam trying to make an Wpf TextBlock to blink. I want like when im clicking on an button then the textblock blinks. How can i achive this.
I have tried the following.
<TextBlock Name="txtBlockScannerText" Margin="10,0,0,0" Style="{StaticResource TextBlockNormal}" Text="Skanna Inleverans listan">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="TextBlock.MouseEnter">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard BeginTime="00:00:00" RepeatBehavior="Forever" Storyboard.TargetName="txtBlockScannerText" Storyboard.TargetProperty="(Foreground).(SolidColorBrush.Color)">
<ColorAnimation From="Black" To="Red" Duration="0:0:1"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
But with this code it only blinks when my mouse enter it. How can i trigger the blink in an button click event. Or how do i call the event to blink. Thanks for help
Here is the solution
<TextBlock Name="txtBlockScannerText" Margin="10,0,0,0" Text="WELCOME"> </TextBlock>
<Button Content="Click Me" Height="23" HorizontalAlignment="Left" Margin="225,43,0,0" Name="button1" VerticalAlignment="Top" Width="75">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard BeginTime="00:00:00"
RepeatBehavior="Forever"
Storyboard.TargetName="txtBlockScannerText"
Storyboard.TargetProperty="(Foreground).(SolidColorBrush.Color)">
<ColorAnimation From="Black" To="Blue" Duration="0:0:1"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Button.Triggers>
</Button>
There's no click event on a TextBlock. If you use a button with the textblock as content you can hook up your animation to the button's click event. You may need to style the button to remove 3D look or what else you may choose as default style for your buttons.
Make your trigger listen to the Loaded event rather than the MouseEnter event...
<EventTrigger RoutedEvent="TextBlock.Loaded">
Related
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.
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>
I have a button inside a DataTemplate of a ListBox.
Whenever a button is added to the Listbox,I want to animate the appearance of the new button by setting the opacity from minimum to maximum.
How do I do this?
You could listen to Loaded event. When Loaded wpf will trigger your animation.
Here is an example how you could achieve that:
<Button Height="23" Margin="102,95,100,0" Name="button3" VerticalAlignment="Top" Content="Opacity">
<Button.Triggers>
<EventTrigger RoutedEvent="Loaded">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetProperty="Opacity"
From="1"
To="0"
Duration="0:0:1"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
Is there a way to change the TabIndex (in XAML only) when a button is clicked.
Below is my try following this article and one on my own which is commented.
Thanks!
<StackPanel>
<Button x:Name="Button" Content="Go" />
<TabControl x:Name="Tab">
<TabItem Header="First">
<TextBlock Text="First" />
</TabItem>
<TabItem Header="Second">
<TextBlock Text="Second" />
</TabItem>
<TabControl.Triggers>
<EventTrigger RoutedEvent="Button.PreviewMouseLeftButtonDown">
<BeginStoryboard>
<Storyboard>
<Int32AnimationUsingKeyFrames
Duration="0"
Storyboard.TargetName="Tab"
Storyboard.TargetProperty="TabIndex">
<DiscreteInt32KeyFrame
KeyTime="0"
Value="1" />
</Int32AnimationUsingKeyFrames>
<!--<Int32Animation
Duration="0"
Storyboard.TargetName="Tab"
Storyboard.TargetProperty="TabIndex"
FillBehavior="HoldEnd"
By="1"
From="0"
To="1" />-->
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TabControl.Triggers>
</TabControl>
</StackPanel>
Edit: Use SelectedIndex instead of TabIndex to change the current tab.
Your event trigger is misplaced. Instead of placing the trigger on TabControl, place trigger on StackPanel.
<StackPanel.Triggers>
<EventTrigger RoutedEvent="Button.PreviewMouseLeftButtonDown">
<BeginStoryboard>
<Storyboard>
<Int32AnimationUsingKeyFrames Duration="0"
Storyboard.TargetName="Tab"
Storyboard.TargetProperty="TabIndex">
<DiscreteInt32KeyFrame KeyTime="0"
Value="1" />
</Int32AnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</StackPanel.Triggers>
Reason:
Button.PreviewMouseLeftButtonDown is a tunnelling routed attached event i.e. it will start from root element and continue to tunnel until it reaches actual sender. So, it will start from window or UserControl and will continue to tunnel until it reaches Go button. It won't tunnel to TabControl since it is sibling of button and not a parent of TabControl.
But it will work if you place it on StackPanel since StackPanel is parent of TabControl and Button. Before tunnelling to GO Button, it will pass via StackPanel. Hence, your storyBoard will work.
I've got a canvas control that grows in height when you move the mouse over it and shrinks back on mouse leave.
<Canvas x:Name="infoBar" Width="720" Height="39" Background="Red">
<Canvas.Triggers>
<EventTrigger RoutedEvent="Canvas.MouseEnter">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="infoBar"
Storyboard.TargetProperty="Height"
From="39" To="255" Duration="0:0:0.5"
/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Canvas.MouseLeave">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation
Storyboard.TargetName="infoBar"
Storyboard.TargetProperty="Height"
From="255" To="39" Duration="0:0:0.5"
/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Canvas.Triggers>
<StackPanel>
<TextBlock/>
<TextBlock/>
</StackPanel>
</Canvas>
This works fine. However if two quick consecutive events take place (mouseleave before mouse enter animation finishes) it goes nuts.
Is there anyway i can tell it to cancel out any other events that happen before an animation finishes?
Using your event triggers you can perform pause, stop, resume, etc. commands on named storyboards.
This article should answer your questions.
I am trying to change the Background Color of the ParentGrid when the child control ( Button ) ChildButton is clicked
I want to achive this using Triggers but not sure if this is even possible
Please Suggest a way to DO this through XAML only
<Grid Name="ParentGrid" Background="Red">
<Button Name="ChildButton" />
</Grid>
Thanks
<Grid Name="ParentGrid" Background="Red">
<Button Name="ChildButton" Margin="100">
<Button.Triggers>
<EventTrigger RoutedEvent="ButtonBase.Click">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Duration="0"
Storyboard.TargetName="ParentGrid"
Storyboard.TargetProperty="Background.Color" To="Blue"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
</Grid>