我创建了一个单击事件/方法,该事件/方法更改了文本框的不透明度和IsEnabled属性。
private void EditButton(object sender, RoutedEventArgs e)
{
religionTB.IsEnabled = true;
DoubleAnimation fade = new
DoubleAnimation(1,TimeSpan.FromSeconds(0.2));
religionTB.BeginAnimation(OpacityProperty, fade);
}
在我的WPF项目中,有多个文本框,我想将此方法应用于所有这些文本框,而不必在方法中列出所有文本框。我该怎么办?
答案 0 :(得分:0)
您可以使用Style
来实现。为此,请转到事件处理程序(Control
或Window
)的上下文并添加一个DependencyProperty
,以标记启用的模式并绑定一个ToggleButton
(编辑按钮)来设置此属性,以启用/禁用控件并触发淡入和淡出动画:
在您的控制范围内:
public static readonly DependencyProperty IsEditEnabledProperty = DependencyProperty.Register(
"IsEditEnabled",
typeof(bool),
typeof(MainWindow),
new PropertyMetadata(default(bool)));
public bool IsEditEnabled { get { return (bool) GetValue(MainWindow.IsEditEnabledProperty); } set { SetValue(MainWindow.IsEditEnabledProperty, value); } }
在XAML中,添加TextBox
样式并将ToggleButton
链接到IsEditEnabled
:
<Window.Resources>
<Style x:Key="OpacityStyle" TargetType="TextBox">
<Setter Property="Opacity" Value="0" />
<Setter Property="IsEnabled"
Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=Window}, Path=IsEditEnabled}" />
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=Window}, Path=IsEditEnabled}"
Value="True">
<! Fade in animation -->
<DataTrigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
BeginTime="0:0:0"
From="0"
To="1"
Duration="0:0:0.2" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
<! Fade out animation -->
<DataTrigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="Opacity"
BeginTime="0:0:0"
From="1"
To="0"
Duration="0:0:0.2" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.ExitActions>
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid>
<StackPanel>
<ToggleButton x:Name="EditButton" IsChecked="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=Window}, Path=IsEditEnabled, Mode=TwoWay}" />
<TextBox x:Name="AnimatedTextBox" Style="{StaticResource TextBoxAnimationStyle}" >
<TextBox x:Name="AnotherAnimatedTextBox" Style="{StaticResource TextBoxAnimationStyle}" >
<TextBox x:Name="NonanimatedTextBox" >
</StackPanel>
</Grid>
如果通过删除Style
属性使x:Key
隐式,它将应用于范围内的所有TextBox
元素