WPF中的自定义按钮模板 [英] Custom button template in WPF

问题描述

我想创建一个简单的按钮模板，其中包含图像和文本。但是我想保持系统按钮的外观。

I want to create a simple button template with an image and text inside it. But I want to keep the System button's look and feel.

如何逐步创建它？

PS：我已经在WPF中使用 CustomControl 和 BasedOn 属性进行过尝试。

P.S.: I have already tried it with CustomControl in WPF and BasedOn property.

推荐答案

您可以使用样式和附加属性轻松完成此操作：

You can do this easily with a style and attached property:

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:ap="clr-namespace:MyProject.Namespace.Path.To.ButtonProperties">
    ...
    <Style x:Key="ImageButton" TargetType="Button">
        <Setter Property="ContentTemplate">
            <Setter.Value>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <Image Source="{Binding Path=(ap:ButtonProperties.Image), RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Button}}}"></Image>
                        <ContentPresenter Content="{Binding Path=Content, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Button}}}"></ContentPresenter>
                    </StackPanel>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    ...
</ResourceDictionary>

和

public class ButtonProperties
{
    public static ImageSource GetImage(DependencyObject obj)
    {
        return (ImageSource)obj.GetValue(ImageProperty);
    }

    public static void SetImage(DependencyObject obj, ImageSource value)
    {
        obj.SetValue(ImageProperty, value);
    }

    public static readonly DependencyProperty ImageProperty =
        DependencyProperty.RegisterAttached("Image", typeof(ImageSource), typeof(ButtonProperties), new UIPropertyMetadata((ImageSource)null));
}

然后在标记中：

<Button Style="{StaticResource ImageButton}" ap:ButtonProperties.Image="{StaticResource MyImage}" Content="Test">
</Button>

此示例看起来非常丑陋，但是您可以轻松更改 StackPanel 到 Grid 或类似的方式来限制图像比例。使用 ContentPresenter 可以保留按钮的行为，允许您将任何 UIElement 放入其中，并保留Command支持等等。

This example looks pretty hideous, but you can easily change the StackPanel to a Grid or something similar to constrain the image proportion. Using the ContentPresenter allows you to preserve the behaviour of a button allowing you to put any UIElement inside, and retaining Command support etc.

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