DataServiceContext.BeginLoadProperty 方法 (Object, String, DataServiceQueryContinuation, AsyncCallback, Object)
通过使用所提供的查询延续对象，从数据服务异步加载下一页相关实体。
命名空间： System.Data.Services.Client
程序集： Microsoft.Data.Services.Client（在 Microsoft.Data.Services.Client.dll 中）
语法
声明
Public Function BeginLoadProperty ( _
entity As Object, _
propertyName As String, _
continuation As DataServiceQueryContinuation, _
callback As AsyncCallback, _
state As Object _
) As IAsyncResult
用法
Dim instance As DataServiceContext
Dim entity As Object
Dim propertyName As String
Dim continuation As DataServiceQueryContinuation
Dim callback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginLoadProperty(entity, _
propertyName, continuation, callback, _
state)
public IAsyncResult BeginLoadProperty(
Object entity,
string propertyName,
DataServiceQueryContinuation continuation,
AsyncCallback callback,
Object state
)
public:
IAsyncResult^ BeginLoadProperty(
Object^ entity,
String^ propertyName,
DataServiceQueryContinuation^ continuation,
AsyncCallback^ callback,
Object^ state
)
member BeginLoadProperty :
entity:Object *
propertyName:string *
continuation:DataServiceQueryContinuation *
callback:AsyncCallback *
state:Object -> IAsyncResult
public function BeginLoadProperty(
entity : Object,
propertyName : String,
continuation : DataServiceQueryContinuation,
callback : AsyncCallback,
state : Object
) : IAsyncResult
参数
- entity
类型：System.Object
包含要加载的属性的实体。
- propertyName
类型：System.String
要加载的指定实体的属性名称。
- continuation
类型：System.Data.Services.Client.DataServiceQueryContinuation
DataServiceQueryContinuation<T> 对象，表示要从数据服务返回的下一页相关实体数据。
- callback
类型：System.AsyncCallback
当结果可供客户端使用时将调用的委托。
- state
类型：System.Object
已传递到回调的用户定义的状态对象。
返回值
类型：System.IAsyncResult
表示操作状态的 IAsyncResult。
注释
所提供的 DataServiceQueryContinuation<T> 对象所包含的 URI 在执行时会返回查询结果中的下一页数据。