TypeConverter

<Grid Background="Red"/>

class Human
{
    private string name;
    private Human child;
    public string Name
    {
        get { return name; }
        set { name = value; }
    }
    public Human Child
    {
        get { return child; }
        set { child = value; }
    }
    public Human()
    {
        Name = string.Empty;
        Child = null;
    }
    public Human(string name)
        :this ()
    {
        Name = name;
    }
}

public class NameToHumanTypeConverter : TypeConverter
{
    public override bool CanConvertFrom(ITypeDescriptorContext context, System.Type sourceType)
    {
        if (sourceType == typeof(string))
            return true;
        else
            return base.CanConvertFrom(context, sourceType);
    }
    public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
    {
        if (value != null && value is string)
        {
            Human human = new Human();
            human.Name = (string)value;
            return human;
        }
        else
        {
            return base.ConvertFrom(context, culture, value);
        }
    }
}

[TypeConverter(typeof(NameToHumanTypeConverter))]
class Human
{
    // ...
}

<Window x:Class="类型转换01.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:codes="clr-namespace:类型转换01"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <codes:Human x:Key="man" Name="Louis" Child="Liu"></codes:Human>
    </Window.Resources>
    <Grid>
        <Button Click="Button_Click"></Button>
    </Grid>
</Window>

static void Main(string[] args)
{
    CoordinateToStringTypeConverter converter = new CoordinateToStringTypeConverter();
    Coordinate testCoordinate = new Coordinate(1.2, 3.4);
    string resultString = (string)converter.ConvertFrom(testCoordinate);
    Console.WriteLine(resultString);
    resultString = (string)TypeDescriptor.GetConverter(typeof(Coordinate)).ConvertFrom(testCoordinate);
    Console.WriteLine(resultString);
    string testString = "5.6,7.8";
    Coordinate resultCoordinate = (Coordinate)converter.ConvertTo(testString, typeof(Coordinate));
    Console.WriteLine(resultCoordinate);
    resultCoordinate = (Coordinate)TypeDescriptor.GetConverter(typeof(Coordinate)).ConvertTo(testString, typeof(Coordinate));
    Console.WriteLine(resultCoordinate);
}