Question

我有以下设想:

<UserControl.Resources>
    <Style x:Key="NormalFontStyle">
        <Setter Property="Control.FontFamily" Value="{Binding MyFont}"></Setter>
    </Style>
    <Style x:Key="BigFontStyle">
        <Setter Property="Control.FontFamily" Value="{Binding MyFont}"></Setter>
        <Setter Property="Control.FontSize" Value="{Binding MyBigFontSize}"></Setter>
    </Style>
</UserControl.Resources>

<Grid Style="{StaticResource NormalFontStyle}">
    <!-- Grid Contents -->
</Grid>

Grid的数据背景是含有MyFont和MyBigFontSize财产的《观点》。上述法规是适当的,电网内的每一文本都适用“NormalFontStyle”。

Now the tricky part: I want to apply the "BigFontStyle" to a control inside the grid that may or may not have the same DataContext, which means that i cannot use this approach. Maybe binding the Values of the setters to static properties is the only way to go, (i just found this workaround for 3.5, which is my case here) but any light on this is welcome.

Answer 1

你们应该把你们的财产放在一个单一州,这样,你就可以在你的申请中把财产从任何地方约束起来。

MySingleton.cs(ModelBase 诉加拿大)

public class MySingleton: ViewModelBase
{
    private static MySingleton instance;
    private static readonly object padlock = new object();

    private FontFamily _myFont = new FontFamily();

    public static MySingleton Instance
    {
        get
        {
            lock (padlock)
            {
                if (instance == null)
                {
                    instance = new MySingleton();
                }
            }
            return instance;
        }
    }

    public FontFamily MyFont
    {
        get { return _myFont ; }
        set
        {
            _myFont = value;
            OnPropertyChanged("MyFont");
        }
    }
}

App.xaml

<Application ...
             xmlns:local="clr-namespace:ScrumManagementClient.ViewModel">
    <Application.Resources>
        <ResourceDictionary>
            <local:CurrentDataSingleton x:Key="Singleton"/>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="MyResourceDictionary.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

MyResourceDictionary.xaml

    <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

        <Style x:Key="NormalFontStyle">
            <Setter Property="Control.FontFamily" Value="{Binding Source={StaticResource  Singleton}, Path=Instance.MyFont}"/>
        </Style>

        <Style x:Key="BigFontStyle">
            <Setter Property="Control.FontFamily" Value="{Binding MyFont}"/>
            <Setter Property="Control.FontSize" Value="{Binding MyBigFontSize}"/>
        </Style>
    <ResourceDictionary/>

现在,你可以在你申请时从任何地点用 st子:

`Style="{StaticResource stylename}"`

And to set a value in c# use:

MySingleton.Instance.Property = ?

友情链接