DownloadStringCompletedEventArgs.Result 屬性

定義

命名空間:

System.Net

組件:

netstandard.dll, System.Net.WebClient.dll

來源:

WebClient.cs

取得透過某種 DownloadStringAsync 方法下載的資料。

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

public string Result { get; }

member this.Result : string

Public ReadOnly Property Result As String

屬性值

String

String A 裡面包含下載的資料。

範例

以下程式碼範例顯示此屬性的值。

private static void DownloadStringCallback2(Object sender, DownloadStringCompletedEventArgs e)
{
    // If the request was not canceled and did not throw
    // an exception, display the resource.
    if (!e.Cancelled && e.Error == null)
    {
        string textString = (string)e.Result;

        Console.WriteLine(textString);
    }
}

Private Shared Sub DownloadStringCallback2(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs)

    '  If the request was not canceled and did not throw
    '  an exception, display the resource.
    If e.Cancelled = False AndAlso e.Error Is Nothing Then

        Dim textString As String = CStr(e.Result)
        Console.WriteLine(textString)
    End If
End Sub

備註

你應該先檢查 Error 和 Cancelled 屬性，再使用這個屬性回傳的資料。 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。