为什么下面的xaml代码不起作用?
为什么这个xaml代码不起作用为什么下面的xaml代码不起作用?,xaml,Xaml,为什么这个xaml代码不起作用 <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Grid> <Grid.Resources> <ControlTemplate x:Key="btnTemplate" TargetType
<Page
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid>
<Grid.Resources>
<ControlTemplate x:Key="btnTemplate" TargetType="{x:Type Button}">
<Grid>
<Ellipse Name="el1" Fill="Orange" Width="100" Height="100" />
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Button.IsMouseOver" Value="True">
<Setter TargetName="el1" Property="Background" Value="Blue" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Grid.Resources>
<Button Content="Klick mich" Template="{StaticResource btnTemplate}"/>
</Grid>
</Page>
您试图在触发器中设置背景属性,但椭圆没有背景属性。它有一个属性。因此,您需要使用:
<Grid>
<Grid.Resources>
<ControlTemplate x:Key="btnTemplate" TargetType="{x:Type Button}">
<Grid>
<Ellipse Name="el1" Fill="Orange" Width="100" Height="100" />
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Button.IsMouseOver" Value="True">
<Setter TargetName="el1" Property="Fill" Value="Blue" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Grid.Resources>
<Button Content="Klick mich" Template="{StaticResource btnTemplate}" />
</Grid>