UploadStringCompletedEventArgs 类
定义
重要
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为 UploadStringCompleted 事件提供数据。
public ref class UploadStringCompletedEventArgs : System::ComponentModel::AsyncCompletedEventArgspublic class UploadStringCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgstype UploadStringCompletedEventArgs = class
inherit AsyncCompletedEventArgsPublic Class UploadStringCompletedEventArgs
Inherits AsyncCompletedEventArgs- 继承
示例
下面的代码示例演示如何异步上传字符串。
public static void UploadStringInBackground2(string address)
{
WebClient client = new WebClient();
Uri uri = new Uri(address);
string data = "Time = 12:00am temperature = 50";
client.UploadStringCompleted += new UploadStringCompletedEventHandler(UploadStringCallback2);
client.UploadStringAsync(uri, data);
}
Public Shared Sub UploadStringInBackground2(ByVal address As String)
Dim client As WebClient = New WebClient()
Dim data As String = "Time = 12:00am temperature = 50"
AddHandler client.UploadStringCompleted, AddressOf UploadStringCallback2
Dim uri as Uri = New Uri(address)
client.UploadStringAsync(uri, data)
End Sub
上传完成后，将调用以下方法。
private static void UploadStringCallback2(Object sender, UploadStringCompletedEventArgs e)
{
string reply = (string)e.Result;
Console.WriteLine(reply);
}
Private Shared Sub UploadStringCallback2(ByVal sender As Object, ByVal e As UploadStringCompletedEventArgs)
Dim reply As String = CStr(e.Result)
Console.WriteLine(reply)
End Sub
注解
此类的实例将传递给 UploadStringCompletedEventHandler。
属性
| Cancelled |
获取一个值，该值指示异步操作是否已被取消。 (继承自 AsyncCompletedEventArgs) |
| Error |
获取一个值，该值指示异步操作期间发生的错误。 (继承自 AsyncCompletedEventArgs) |
| Result |
获取通过调用 UploadStringAsync 方法启动的字符串上载操作的服务器回复。 |
| UserState |
获取异步任务的唯一标识符。 (继承自 AsyncCompletedEventArgs) |
方法
| Equals(Object) |
确定指定对象是否等于当前对象。 (继承自 Object) |
| GetHashCode() |
作为默认哈希函数。 (继承自 Object) |
| GetType() |
获取当前实例的 Type。 (继承自 Object) |
| MemberwiseClone() |
创建当前 Object 的浅表副本。 (继承自 Object) |
| RaiseExceptionIfNecessary() |
如果异步操作失败，则引发用户提供的异常。 (继承自 AsyncCompletedEventArgs) |
| ToString() |
返回表示当前对象的字符串。 (继承自 Object) |
