相关疑难解决方法(0)

我在ButtonStyle中创建了一个Image.现在我创建了一个附加属性,以便我可以为该图像设置Source.应该是直截了当但我坚持下去.

这是我缩短的ButtonStyle:

<Style x:Key="ToolBarButtonStyle"
        TargetType="Button">
    ...
    <Image x:Name="toolbarImage"
            Source="{TemplateBinding PrismExt:ImageSourceAttachable:ImageSource}"
            Width="48"
            Height="48" />
    ...
</Style>

这是附加的属性定义,注意我不知道如何修复回调,因为dependencyproperty似乎是按钮而不是图像.而Button不会在我的风格中暴露我的Image.这很棘手.

namespace SalesContactManagement.Infrastructure.PrismExt
{
    public class ImgSourceAttachable
    {
        public static void SetImgSource(DependencyObject obj, string imgSource)
        {
            obj.SetValue(ImgSourceProperty, imgSource);
        }

        public static string GetImgSource(DependencyObject obj)
        {
            return obj.GetValue(ImgSourceProperty).ToString();
        }

        // Using a DependencyProperty as the backing store for MyProperty.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ImgSourceProperty =
            DependencyProperty.RegisterAttached("ImgSource", typeof(string), typeof(ImgSourceAttachable), new PropertyMetadata(Callback));

        private static void Callback(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            //((Button)d).Source = …