[英]Binding to static property in static class in WPF
I have a problem with binding values from static properties from static class.我在绑定来自静态类的静态属性的值时遇到问题。
My class:我的课:
namespace MyNamespace.Data
{
public static class MySettings
{
public static Color BackgroundColor { get; set; }
public static Color FontColor { get; set; }
}
}
XAML: XAML:
<Page ...
xmlns:colors="clr-namespace:MyNamespace.Data"
...>
...
<Button Grid.Column="0" Content="Text"
Background="{Binding Source={x:Static s:MySettings.BackgroundColor}}"
Foreground="{Binding Source={x:Static s:MySettings.FontColor}}"
BorderBrush="{Binding Source={x:Static s:MySettings.FontColor}}"/>
and when I run this code Background is set OK but the rest remains unchanged..当我运行此代码时,背景设置正常,但其余部分保持不变..
Problem is that your source properties are of a Color
type and destination properties are Brush
.问题是您的源属性是Color
类型,目标属性是Brush
。 You can create SolidColorBrush
using your color like so:您可以使用您的颜色创建SolidColorBrush
如下所示:
<Button Content="Text">
<Button.Background>
<SolidColorBrush Color="{Binding Source={x:Static s:MySettings.BackgroundColor}}"/>
</Button.Background>
<Button.Foreground>
<SolidColorBrush Color="{Binding Source={x:Static s:MySettings.FontColor}}"/>
</Button.Foreground>
<Button.BorderBrush>
<SolidColorBrush Color="{Binding Source={x:Static s:MySettings.FontColor}}"/>
</Button.BorderBrush>
</Button>
You don't need to use static
properties... you can declare a class using the Singleton
pattern, so there can only be one instance, just like a static
class.您不需要使用static
属性...您可以使用Singleton
模式声明一个类,因此只能有一个实例,就像static
类一样。 Just use normal public
CLR properties in this class... something like this (but with properties):只需在这个类中使用普通的public
CLR 属性......像这样(但有属性):
public class StateManager
{
private static StateManager instance;
private StateManager() { }
public static StateManager Instance
{
get { return instance ?? (instance = new StateManager()); }
}
...
}
Then only reference it from a base view model using the Instance
property like this:然后只使用Instance
属性从基本视图模型中引用它,如下所示:
public StateManager StateManager
{
get { return StateManager.Instance; }
}
Then you can access the properties in the UI simply, like this::然后您可以简单地访问 UI 中的属性,如下所示:
<Ribbon:RibbonCheckBox Grid.Row="1" Label="Audit fields"
IsChecked="{Binding StateManager.AreAuditFieldsVisible}" ... />
<Ribbon:RibbonCheckBox Grid.Row="2" Label="ISRCs on results"
IsChecked="{Binding StateManager.AreIsrcsVisibleOnSearchResults}" ... />
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