VB.NET-BackgroundWorker.RunWorkerCompleted的“发送者”是什么?

你的问题让我好奇:

根据你的问题,答案是 对。

我试过一些测试:

我试过的第一个方法是:

    Private Sub BackgroundWorker1_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BackgroundWorker1.RunWorkerCompleted
       MsgBox(sender.Name.ToString)
    End Sub

sender .

但使用:

    Private Sub BackgroundWorker1_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Handles BackgroundWorker1.RunWorkerCompleted
        If sender Is BackgroundWorker1 Then
            MsgBox("Yeah!")
        End If
    End Sub

Yeah! ,确认 发件人 BackgroundWorker1 .

供参考: HOW TO: Determine the Sender of an Event Without Using the Control.Name Property