我对xaml很新,我试图从自定义类绑定属性以应用主题系统,但xaml尝试在设置属性之前绑定。我也无法让INotifyPropertyChanged使用我的自定义类,我希望允许用户动态切换主题。
我的(简化)代码:
public class clsThemeObjects : DependencyObject, ComponentModel.INotifyPropertyChanged
{
public event PropertyChangedEventHandler System.ComponentModel.INotifyPropertyChanged.PropertyChanged;
public delegate void PropertyChangedEventHandler(object sender, System.ComponentModel.PropertyChangedEventArgs e);
public SolidColorBrush ButtonTextBrush {
get {
return (SolidColorBrush)GetValue(ButtonTextBrushProperty);
}
set {
SetValue(ButtonTextBrushProperty, value);
if (PropertyChanged != null) {
PropertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs("ButtonTextBrush"));
}
}
}
public static readonly DependencyProperty ButtonTextBrushProperty = DependencyProperty.Register("ButtonTextBrush", typeof(SolidColorBrush), typeof(cls_Globals), new PropertyMetadata(null));
}
static class Globals
{
static ThemeObjects = new clsThemeObjects();
public Globals()
{
ApplyTheme();
}
Public static void ApplyTheme()
{
ThemeObjects.ButtonTextBrush = new SolidColorBrush(Colors.Black);
}
}
在我的xaml中我这样做:
<Button Style="{StaticResource ButtonBlankStyle}" Grid.Row="2" Name="btnAddModules" HorizontalContentAlignment="Stretch">
<Border BorderThickness="2" BorderBrush="Black" CornerRadius="2" Margin="0,4">
<TextBlock Text="Test" Foreground="{Binding Path=ButtonTextBrush, Source={StaticResource ThemeObjects}}" />
</Border>
</Button>
我认为使用iNotifyPropertyChanged会有效,但事实并非如此,有人可以帮忙吗?
由于
答案 0 :(得分:0)
如果声明了static ThemeObjects = new clsThemeObjects();在静态类中,它并不意味着您可以使用StaticResource标记扩展从XAML访问它。您应该在XAML中将其声明为资源来执行此操作。请详细了解StaticResource