PageAsyncTask.State 属性

定义

命名空间:

System.Web.UI

程序集:

System.Web.dll

获取表示任务状态的对象。

public:
 property System::Object ^ State { System::Object ^ get(); };

public object State { get; }

member this.State : obj

Public ReadOnly Property State As Object

属性值

Object

Object，表示任务状态。

示例

下面的代码示例创建三个异步任务，并为其属性提供唯一值 State 。 此示例是类概述中找到的较大示例的 PageAsyncTask 一部分。

PageAsyncTask asyncTask1 = new PageAsyncTask(slowTask1.OnBegin, slowTask1.OnEnd, slowTask1.OnTimeout, "Async1", true);
PageAsyncTask asyncTask2 = new PageAsyncTask(slowTask2.OnBegin, slowTask2.OnEnd, slowTask2.OnTimeout, "Async2", true);
PageAsyncTask asyncTask3 = new PageAsyncTask(slowTask3.OnBegin, slowTask3.OnEnd, slowTask3.OnTimeout, "Async3", true);

// Register the asynchronous task.
Page.RegisterAsyncTask(asyncTask1);
Page.RegisterAsyncTask(asyncTask2);
Page.RegisterAsyncTask(asyncTask3);

Dim asyncTask1 As New PageAsyncTask(AddressOf slowTask1.OnBegin, AddressOf slowTask1.OnEnd, AddressOf slowTask1.OnTimeout, "Async1", True)
Dim asyncTask2 As New PageAsyncTask(AddressOf slowTask2.OnBegin, AddressOf slowTask2.OnEnd, AddressOf slowTask2.OnTimeout, "Async2", True)
Dim asyncTask3 As New PageAsyncTask(AddressOf slowTask3.OnBegin, AddressOf slowTask3.OnEnd, AddressOf slowTask3.OnTimeout, "Async3", True)

' Register the asynchronous task.
Page.RegisterAsyncTask(asyncTask1)
Page.RegisterAsyncTask(asyncTask2)
Page.RegisterAsyncTask(asyncTask3)

注解

该 State 属性在构造函数中设置，在执行异步任务期间无法修改。 可以通过将唯一字符串值分配给其各自的 State 属性来区分页面中的异步任务。