WPF 简单 TypeConvert 测试

XMAL:

<Window x:Class="WpfApp3.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:WpfApp3"
        mc:Ignorable="d" WindowStartupLocation="CenterScreen"
        Title="MainWindow" Height="350" Width="500">
    <Window.Resources>
        <local:Human x:Key="human" Child="Tom"/>
    </Window.Resources>
    <Grid>
        <Button x:Name="btn_HumanTest" Click="btn_HumanTest_Click" Content="Human 测试" Height="40" Width="100" />
    </Grid>
</Window>

behind code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApp3
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btn_HumanTest_Click(object sender, RoutedEventArgs e)
        {
            Human h = FindResource("human") as Human;
            MessageBox.Show(h.Child.Name);
        }
    }

    public class StringToHumanTypeConverter : TypeConverter
    {
        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
        {
            if (value is string)
            {
                Human h = new Human();
                h.Name = value as string;
                return h;
            }

            return base.ConvertFrom(context, culture, value);
        }
    }

    [TypeConverter(typeof(StringToHumanTypeConverter))]
    public class Human
    {
        public string Name { get; set; }
        public Human Child { get; set; }
    }
}  // namespace

运行：

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来自：《深入浅出 WPF》P21