调整菜谱：

• TypeDescriptionProvider

• 还是替换的元数据（不扩展）


• 也可以为 TypeDescriptor.AddProvider $ C $加C>


• 可以为每个类型的应用，以及每个实例，从而可以应用到列表，而无需执行 ITypedList

• still replaces metadata (not extends)
• can also be added be TypeDescriptor.AddProvider
• can be applied per-type as well as per-instance, making it possible to apply to lists without having to implement ITypedList

的TypeConverter

• 为的PropertyGrid ，这也是用来获取元数据的机制;注意， ExpandableObjectConverter 只是委托给 TypeDescriptor.GetProperties ，但这并非总是如此


• 还负责重新创建不可变对象（如结构）有改动

• for PropertyGrid, this is also the mechanism used to obtain metadata; note that ExpandableObjectConverter simply delegates to TypeDescriptor.GetProperties, but this is not always the case
• also responsible for re-creating immutable objects (such as structs) with changes

UITypeEditor的

• 还负责的PropertyGrid $ C画预览框中$ C>

• also responsible for painting the preview box in PropertyGrid

其他：

• IExtenderProvider - 追加的性能;这可能是你感到困惑什么用 TypeDescriptionProvider


• ITypedList - 广泛 ICustomTypeDescriptor 的双胞胎，但对于名单;可以通过使用 TypeDescriptionProvider ，并在任何一个非对象索引来避免的IList ，即公共ŧ这个[INT指数] {获得;}


• IListSource - 一个数据 - 之间提供间接源和数据;例如，数据表工具 IListSource ，返回默认视图时要求

• IExtenderProvider - appends properties; this may be what you were getting confused with TypeDescriptionProvider
• ITypedList - broadly the twin of ICustomTypeDescriptor, but for lists; can be avoided by use of TypeDescriptionProvider and a non-object indexer on any IList, i.e. public T this[int index] {get;}
• IListSource - provides indirection between a data-source and the data; for example, a DataTable implements IListSource, returning DefaultView when requested