为WPF中textblock的部分文本应用属性

我想，当textblock的一部分文本是“Thomas”时，文本周围是蓝色的

我该怎么做

您需要一个转换器：

public class StringPropertyContainsThomasConverter : IValueConverter {
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
        if(value != null) {
            if(value.ToString().Contains("Thomas")) return Brushes.Blue; //replace with whatever color you want
        }
        return Brushes.White;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) {
        throw new NotImplementedException();
    }
}

XAML中的用法：

<Window.Resources>
    <local:StringPropertyContainsThomasConverter x:Key="StringPropertyContainsThomasConverter"/>
</Window.Resources>
<TextBlock Background="{Binding RelativeSource={RelativeSource self},
                                Path=Text,
                                Converter={StaticResources StringPropertyContainsThomasConverter}}"/>