【发布时间】：2013-11-27 09:03:06
【问题描述】：
我使用名为ImageButton 的自定义控件来显示具有不同图像的按钮。 ImageButton 包含依赖属性：
public ImageSource DisabledImageSource
{
get { return (ImageSource)GetValue(DisabledImageSourceProperty); }
set { SetValue(DisabledImageSourceProperty, value); }
}
public ImageSource NormalImageSource
{
get { return (ImageSource)GetValue(NormalImageSourceProperty); }
set { SetValue(NormalImageSourceProperty, value); }
}
public ImageSource HoverImageSource
{
get { return (ImageSource)GetValue(HoverImageSourceProperty); }
set { SetValue(HoverImageSourceProperty, value); }
}
public ImageSource PushedImageSource
{
get { return (ImageSource)GetValue(PushedImageSourceProperty); }
set { SetValue(PushedImageSourceProperty, value); }
}
public static readonly DependencyProperty DisabledImageSourceProperty =
DependencyProperty.Register("DisabledImageSource", typeof(ImageSource), typeof(ImageButton), new UIPropertyMetadata());
public static readonly DependencyProperty NormalImageSourceProperty =
DependencyProperty.Register("NormalImageSource", typeof(ImageSource), typeof(ImageButton), new UIPropertyMetadata());
public static readonly DependencyProperty HoverImageSourceProperty =
DependencyProperty.Register("HoverImageSource", typeof(ImageSource), typeof(ImageButton), new UIPropertyMetadata());
public static readonly DependencyProperty PushedImageSourceProperty =
DependencyProperty.Register("PushedImageSource", typeof(ImageSource), typeof(ImageButton), new UIPropertyMetadata());
它的样式定义如下：
<Style TargetType="{x:Type local:ImageButton}">
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid>
<Image Name="image" Source="{Binding NormalImageSource, RelativeSource={RelativeSource TemplatedParent}}" Stretch="None" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="image" Property="Source" Value="{Binding DisabledImageSource, RelativeSource={RelativeSource TemplatedParent}}"/>
</Trigger>
<Trigger Property="Button.IsPressed" Value="True">
<Setter TargetName="image" Property="Source" Value="{Binding PushedImageSource, RelativeSource={RelativeSource TemplatedParent}}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True" />
</MultiTrigger.Conditions>
<Setter TargetName="image" Property="Source" Value="{Binding HoverImageSource, RelativeSource={RelativeSource TemplatedParent}}"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
除了IsPressed 之外，其他一切都很好。我永远看不到我在PushedImageSource 中设置的图像，我不知道为什么。
任何帮助都会得到帮助:)
编辑 1：
这是测试它的 xaml 代码
<Window x:Class="SMEClient.WPF.Tester.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:is="clr-namespace:Project1.SearchBox;assembly=Project1"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="pack://application:,,,/Project1;component/SearchBox/ImageButton.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>
<Grid>
<StackPanel>
<is:ImageButton NormalImageSource="C:\Users\Public\Pictures\Sample Pictures\Koala.jpg"
PushedImageSource="C:\Users\Public\Pictures\Sample Pictures\Chrysanthemum.jpg"
HoverImageSource="C:\Users\Public\Pictures\Sample Pictures\Jellyfish.jpg"/>
</StackPanel>
</Grid>
</Window>
【问题讨论】：
-
试试
IsPressed而不是Button.IsPressed可能对你有用。 -
@NeelBhasin 不幸的是它没有。
-
我可以看看你的 xaml 代码吗？
-
@NeelBhasin 上传了它...
-
如果您删除 'TargetType="{x:Type Button}"' 或将其更改为 ImageButton 会怎样？
标签： c# wpf custom-controls controltemplate