目前,我有一个由PropertyGrid查看的A型对象.然而,其属性之一是B型.属性类型B不可扩展.我如何改变这样做：
以下是我到目前为止的代码：
using System;
using System.Windows.Forms;
using System.ComponentModel;
namespace PropGridTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender,EventArgs e)
{
A a = new A
{
Foo = "WOO HOO!",Bar = 10,BooFar = new B
{
FooBar = "HOO WOO!",BarFoo = 100
}
};
propertyGrid1.SelectedObject = a;
}
}
public class A
{
public string Foo { get; set; }
public int Bar { get; set; }
public B BooFar { get; set; }
}
public class B
{
public string FooBar { get; set; }
public int BarFoo { get; set; }
}
}
解决方法
为此可以使用
ExpandableObjectConverter类.
This class adds support for properties
on an object to the methods and
properties provided by TypeConverter.
To make a type of property expandable
in the PropertyGrid,specify this
TypeConverter for standard
implementations of
GetPropertiesSupported and
GetProperties.
要使用此转换器,请使用TypeConverterAttribute装载有问题的属性,使用typeof(ExpandableObjectConverter)作为构造函数.
public class A
{
public string Foo { get; set; }
public int Bar { get; set; }
[TypeConverter(typeof(ExpandableObjectConverter))]
public B BooFar { get; set; }
}
