我如何注入一个自定义UITypeEditor的一个闭源类型的所有属性？ [英] How do I inject a custom UITypeEditor for all properties of a closed-source type?

问题描述

我想避免的，我已经写了一个自定义UITypeEditor的某种类型的每个实例放置EditorAttribute。

I want to avoid placing an EditorAttribute on every instance of a certain type that I've written a custom UITypeEditor for.

我不能放在类型的EditorAttribute因为我不能修改源。

I can't place an EditorAttribute on the type because I can't modify the source.

我有一个参考到将要使用的唯一的PropertyGrid实例

I have a reference to the only PropertyGrid instance that will be used.

我可以告诉PropertyGrid的实例（或所有实例），以使用自定义UITypeEditor的，每当遇到一个特定类型的？

Can I tell a PropertyGrid instance (or all instances) to use a custom UITypeEditor whenever it encounters a specific type?

这里是一个MSDN文章，它提供的关于如何做到这一点的起点。 NET 2.0或更高版本。

Here is an MSDN article that provides are starting point on how to do this in .NET 2.0 or greater.

推荐答案

您可以通过 TypeDescriptor.AddAttributes 通常副主编等在运行时。例如（在酒吧属性应该表现出一个...，显示编辑！）：

You can usually associate editors etc at runtime via TypeDescriptor.AddAttributes. For example (the Bar property should show with a "..." that displays "Editing!"):

using System;
using System.ComponentModel;
using System.Drawing.Design;
using System.Windows.Forms;

class Foo
{
    public Foo() { Bar = new Bar(); }
    public Bar Bar { get; set; }
}
class Bar
{
    public string Value { get; set; }
}

class BarEditor : UITypeEditor
{
    public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
    {
        return UITypeEditorEditStyle.Modal;
    }
    public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
    {
        MessageBox.Show("Editing!");
        return base.EditValue(context, provider, value);
    }
}
static class Program
{
    [STAThread]
    static void Main()
    {
        TypeDescriptor.AddAttributes(typeof(Bar),
            new EditorAttribute(typeof(BarEditor), typeof(UITypeEditor)));
        Application.EnableVisualStyles();
        Application.Run(new Form { Controls = { new PropertyGrid { SelectedObject = new Foo() } } });
    }
}

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