ConfigurationCollectionAttribute(Type) 构造函数
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
初始化 ConfigurationCollectionAttribute 类的新实例。
public:
ConfigurationCollectionAttribute(Type ^ itemType);public ConfigurationCollectionAttribute (Type itemType);new System.Configuration.ConfigurationCollectionAttribute : Type -> System.Configuration.ConfigurationCollectionAttributePublic Sub New (itemType As Type)参数
- itemType
- Type
要创建的属性集合的类型。
例外
itemType 为 null。
示例
以下示例演示如何使用 ConfigurationCollectionAttribute。
// Declare the Urls collection property using the
// ConfigurationCollectionAttribute.
// This allows to build a nested section that contains
// a collection of elements.
[ConfigurationProperty("urls", IsDefaultCollection = false)]
[ConfigurationCollection(typeof(UrlsCollection),
AddItemName = "add",
ClearItemsName = "clear",
RemoveItemName = "remove")]
public UrlsCollection Urls
{
get
{
UrlsCollection urlsCollection =
(UrlsCollection)base["urls"];
return urlsCollection;
}
}
' Declare the Urls collection property using the
' ConfigurationCollectionAttribute.
' This allows to build a nested section that contains
' a collection of elements.
<ConfigurationProperty("urls", IsDefaultCollection:=False),
System.Configuration.ConfigurationCollection(GetType(UrlsCollection),
AddItemName:="add", ClearItemsName:="clear", RemoveItemName:="remove")> _
Public ReadOnly Property Urls() As UrlsCollection
Get
Dim urlsCollection As UrlsCollection = CType(MyBase.Item("urls"), UrlsCollection)
Return urlsCollection
End Get
End Property
注解
使用此构造函数告知.NET Framework要创建的属性集合的自定义类型。
