绑定一个DataContext字符串属性为静态资源关键 [英] Binding a datacontext string property to a StaticResource key

问题描述

我有一个的ResourceKey和标题的列表值，这些值都是字符串。资源是在一个资源字典中定义的实际资源的名称。每个图标的ResourceKey是帆布的。

I have an List values with a ResourceKey and a Caption, these values are both strings. The Resource is the name of an actual resource defined in a resource dictionary. Each of these ResourceKey Icons are Canvas's.

<Data ResourceKey="IconCalendar" Caption="Calendar"/>
<Data ResourceKey="IconEmail" Caption="Email"/>

然后我有它有一个按钮，按钮下方的文本标题一个DataTemplate的列表视图。我想要做的是显示资源的静态资源作为按钮的内容。

I then have a list view which has a datatemplate with a button and a text caption below the button. What I want to do is display Resource static resource as the content for the button.

<ListView.ItemTemplate>
    <DataTemplate>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="*" />
                <RowDefinition Height="Auto" />
            </Grid.RowDefinitions>

            <Button Content="{Binding ResourceKey}" Template="{StaticResource  RoundButtonControlTemplate}"/>
            <TextBlock Grid.Row="1" Margin="0,10,0,0" Text="{Binding Caption}" HorizontalAlignment="Center" FontSize="20" FontWeight="Bold" />
        </Grid>
    </DataTemplate>
</ListView.ItemTemplate>

我想我已经想尽排列与结合StaticResource的等。

I think I have tried every permutation with binding staticresource etc.

我打开替代品，我知道这可能会更易于只是有一个形象，并设置源属性。

I am open to alternatives, I know it may be easier to just have an image and set the source property.

感谢

推荐答案

有一个小以为我结束了使用后 ValueConvertor 像这样：

After having a little think I ending up using a ValueConvertor like so:

class StaticResourceConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var resourceKey = (string)value;

        return Application.Current.Resources[resourceKey];
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new Exception("The method or operation is not implemented.");
    }
}

和按钮上的约束力变为

<Button Content="{Binding ResourceKey, Converter={StaticResource resourceConverter}}" />

这篇关于绑定一个DataContext字符串属性为静态资源关键的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！