OpenWriteCompletedEventArgs.Result 屬性

定義

命名空間:

System.Net

組件:

netstandard.dll, System.Net.WebClient.dll

來源:

WebClient.cs

取得一個可寫入的串流，用來傳送資料到伺服器。

public:
 property System::IO::Stream ^ Result { System::IO::Stream ^ get(); };

public System.IO.Stream Result { get; }

member this.Result : System.IO.Stream

Public ReadOnly Property Result As Stream

屬性值

Stream

一個 Stream 可以寫入資料上傳的網站。

範例

以下程式碼範例使用了此屬性回傳的串流。

private static void OpenWriteCallback2(Object sender, OpenWriteCompletedEventArgs e)
{
    Stream body = null;
    StreamWriter s = null;

    try
    {
        body = (Stream)e.Result;
        s = new StreamWriter(body);
        s.AutoFlush = true;
        s.Write("This is content data to be sent to the server.");
    }
    finally
    {
        if (s != null)
        {
            s.Close();
        }

        if (body != null)
        {
            body.Close();
        }
    }
}

Private Shared Sub OpenWriteCallback2(ByVal sender As Object, ByVal e As OpenWriteCompletedEventArgs)

    Dim body As Stream = Nothing
    Dim s As StreamWriter = Nothing

    Try

        body = CType(e.Result, Stream)
        s = New StreamWriter(body)
        s.AutoFlush = True
        s.Write("This is content data to be sent to the server.")
    Finally

        If Not s Is Nothing Then

            s.Close()
        End If

        If Not body Is Nothing Then

            body.Close()
        End If
    End Try
End Sub

備註

使用該屬性回傳的串流前，應該先檢查 Error 和 Cancelled 屬性。 若屬性的值為Exception物件或Cancelled屬性值為 true，則Error非同步操作未正確完成，屬性Result值將不成立。