如何在WPF中将DataContext转换为另一种类型？

using System;
using System.Windows.Data;

public class DataContextConverter : TypeConverter
{
    public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
    {
        // 判断是否可以从指定类型进行转换
        return sourceType == typeof(string);
    }

    public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
    {
        // 执行实际的转换操作
        string dataContextString = value as string;
        // 进行转换操作，例如将字符串转换为另一种类型
        // ...

        return convertedValue;
    }
}

<Window x:Class="YourNamespace.YourWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:YourNamespace"
        Title="Your Window" Height="450" Width="800">
    <Window.Resources>
        <local:DataContextConverter x:Key="DataContextConverter" />
    </Window.Resources>
    <Grid>
        <TextBlock Text="{Binding Path=DataContext, Converter={StaticResource DataContextConverter}}" />
    </Grid>
</Window>