Fading out a window
Solution 1
Unloaded is not a suitable event for this, i'm not sure if this event can even occur for windows. You need to handle Closing
, prevent it from actually closing, start an animation and close it when the Completed
event of the animation occurs.
e.g.
<Window ...
Closing="Window_Closing">
private void Window_Closing(object sender, CancelEventArgs e)
{
Closing -= Window_Closing;
e.Cancel = true;
var anim = new DoubleAnimation(0, (Duration)TimeSpan.FromSeconds(1));
anim.Completed += (s, _) => this.Close();
this.BeginAnimation(UIElement.OpacityProperty, anim);
}
Solution 2
just try this sample
<Window x:Class="FadeInAndOutWindow.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300" Closing="Window_Closing" x:Name="winHelp">
<Window.Triggers>
<EventTrigger RoutedEvent="Window.Loaded">
<BeginStoryboard>
<Storyboard Name="FormFade">
<DoubleAnimation Name="FormFadeAnimation"
Storyboard.TargetName="winHelp"
Storyboard.TargetProperty="(Window.Opacity)"
From="0.0"
To="1.0"
Duration="0:0:1"
AutoReverse="False"
RepeatBehavior="1x" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Window.Unloaded">
<BeginStoryboard>
<Storyboard Name="FormFadeOut"
Completed="FormFadeOut_Completed">
<DoubleAnimation Name="FormFadeOutAnimation"
Storyboard.TargetName="winHelp"
Storyboard.TargetProperty="(Window.Opacity)"
From="1.0"
To="0.0"
Duration="0:0:1"
AutoReverse="False"
RepeatBehavior="1x" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Window.Triggers>
<Grid>
</Grid>
namespace FadeInAndOutWindow
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
}
private bool closeCompleted = false;
private void FormFadeOut_Completed(object sender, EventArgs e)
{
closeCompleted = true;
this.Close();
}
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
if (!closeCompleted)
{
FormFadeOut.Begin();
e.Cancel = true;
}
}
}
}
Boardy
Develop apps and services in PHP, C#, C++, HTML, CSS, Jquery etc, recently started learning React.
Updated on July 19, 2022Comments
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Boardy almost 2 years
I am currently developing a wpf c# application. I have added to event triggers to the xaml of the form to fade in when the window loads and fades out when the window closes.
The fading in works perfectly without any problems but the fading out is not working.
I have it set up so the window fades in when it loads, has a timer to last 5 seconds, and then calls the form fade out event.
However, the window doesn't fade out it just closes straight away no animation. Below is the code I have for the fade in and fade out events
<Window.Triggers> <EventTrigger RoutedEvent="Window.Loaded"> <BeginStoryboard> <Storyboard Name="FormFade"> <DoubleAnimation Name="FormFadeAnimation" Storyboard.TargetProperty="(Window.Opacity)" From="0.0" To="1.0" Duration="0:0:1" AutoReverse="False" RepeatBehavior="1x" /> </Storyboard> </BeginStoryboard> </EventTrigger> <EventTrigger RoutedEvent="Window.Unloaded"> <BeginStoryboard> <Storyboard Name="FormFadeOut" Completed="FormFadeOut_Completed"> <DoubleAnimation Name="FormFadeOutAnimation" Storyboard.TargetName="FormFadeOut" Storyboard.TargetProperty="(Window.Opacity)" From="1.0" To="0.0" Duration="0:0:1" AutoReverse="False" RepeatBehavior="1x" /> </Storyboard> </BeginStoryboard> </EventTrigger> </Window.Triggers>
Thanks for any help you can offer.
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Boardy almost 13 yearsI have tried what you have suggested and it is now coming up with an exception saying 'Window.Closing value cannot be assigned to property 'RoutedEvent of object System.Windows.EventTrigger
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H.B. almost 13 yearsCan you see the code? This is not inside of the EventTriggers at all.
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Boardy almost 13 yearsSorry I misread your code, works perfectly, thanks for the help
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H.B. almost 13 yearsYou're welcome, but please take more care to look around on SO first next time as this question has a duplicate which should not have been hard to find.
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Chris over 9 yearsWhere to define Double Animation?
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H.B. over 9 years@Chris: I do not understand your question.
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Chris over 9 yearsSolved my problem. DoubleAnimation is defined in
System.Windows.Media.Animation.DoubleAnimation
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Travis Tubbs about 6 yearsThis is perfect for me! is there an opposite of this to make a popup fad IN?
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H.B. about 6 years@TravisTubbs: You probably can set the opacity to 0 before opening the window/by default and then start an animation in
Loaded
in a similar way.