Question

我创建了一个简单的项目，演示了我遇到错误的问题：＆＃39;为System.Windows.Markup.StaticResourceHolder＆＃39;提供价值。抛出异常。＆＃39;行号＆＃39; 6＆＃39;和行位置＆＃39; 9＆＃39;。

项目布局非常简单，我已将其上传到dropbox： https://www.dropbox.com/s/451b5zkw8oqgcld/StyleTest1.zip?dl=0

MainWindow.xaml

<Window x:Class="StyleTest1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Dictionary1.xaml" />
                <ResourceDictionary Source="Dictionary2.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
                <Setter Property="Background" Value="{DynamicResource Button.Static.Background}"/>
            </Style>
        </ResourceDictionary>
    </Window.Resources>
    <Grid>
        <Button x:Name="button" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Style="{DynamicResource ButtonStyle1}">

        </Button>
    </Grid>
</Window>

Dictionary1.xaml

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

    <GradientStopCollection po:Freeze="true" x:Key="ButtonBackgroundStops">
        <GradientStop Color="#2d2d2f"/>
        <GradientStop Color="#2d2d2f" Offset="1"/>
    </GradientStopCollection>

    <LinearGradientBrush
        po:Freeze="true"    
        x:Key="ButtonBackgroundBrush"           
        GradientStops="{StaticResource ButtonBackgroundStops}"  
        StartPoint="0.5,-0.05"  
        EndPoint="0.5,0.66" />

</ResourceDictionary>

Dictionary2.xaml

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

    <LinearGradientBrush 
        x:Key="Button.Static.Background" 
        GradientStops="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=GradientStops}" 
        StartPoint="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=StartPoint}" 
        EndPoint="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=EndPoint}"/>

</ResourceDictionary>

那就是它......如果我运行该程序，我会得到错误：＆＃39;为System.Windows.Markup.StaticResourceHolder＆＃39;提供价值。抛出异常。＆＃39;行号＆＃39; 6＆＃39;和行位置＆＃39; 9＆＃39;。

但是，如果我将MainWindow.xaml更改为以下内容，则不再出现此问题：以下是修改版本的保管箱链接： https://www.dropbox.com/s/ceikh5b8cfecdkw/StyleTest2.zip?dl=0

MainWindow.xaml

<Window x:Class="StyleTest2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:StyleTest2"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Dictionary1.xaml" />
                <ResourceDictionary Source="Dictionary2.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <LinearGradientBrush 
                x:Key="Button.Static.Background" 
                GradientStops="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=GradientStops}" 
                StartPoint="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=StartPoint}" />
            <Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
                <Setter Property="Background" Value="{DynamicResource Button.Static.Background}"/>
            </Style>
        </ResourceDictionary>
    </Window.Resources>
    <Grid>
        <Button x:Name="button" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Style="{DynamicResource ButtonStyle1}">

        </Button>
    </Grid>
</Window>

这表明Dictionary2.xaml中的LinearGradientBrush绑定到位于Dictionary1.xaml中的ButtonBackgroundBrush资源是一个问题。

任何人都可以告诉我这里我做错了什么，让一个字典中的资源引用另一个字典中的资源的正确方法是什么？

感谢您的时间，

codeOwl

Answer 1

在Dictionary2中使用DynamicResource StaticResource，

或
在Dictionary2中合并词典1，然后就不会出现任何问题。

Dictionary2将如下所示：

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

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="Dictionary1.xaml"/>
    </ResourceDictionary.MergedDictionaries>

    <LinearGradientBrush 
        x:Key="Button.Static.Background" 
        GradientStops="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=GradientStops}" 
        StartPoint="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=StartPoint}" 
        EndPoint="{Binding Source={StaticResource ButtonBackgroundBrush}, Path=EndPoint}"/>

</ResourceDictionary>

WPF Merged ResourceDictionary与资源绑定到另一个词典中的资源不起作用

1 个答案: