如果选择了“下一步”，则VB.net将循环播放mp3

嘿，我有以下代码：

Dim totalDistance as Boolean = False

    If totalDistance <= 210 Then
        'red
        If isPlaying = False Then
            isPlaying = True
            WMP.URL = Application.StartupPath + "\red.mp3"
            WMP.controls.stop()
            WMP.controls.play()
            WMP.settings.setMode("loop", True)
        End If

        backupLineRED.Visible = True
        backupLineYELLOW.Visible = False
        backupLineGREEN.Visible = False
    ElseIf totalDistance > 210 And totalDistance <= 670 Then
        'yellow
        WMP.URL = Application.StartupPath + "\yellow.mp3"
        WMP.controls.play()
        backupLineRED.Visible = True
        backupLineYELLOW.Visible = True
        backupLineGREEN.Visible = False
    ElseIf totalDistance > 671 And totalDistance <= 1000 Then
        'green
        WMP.URL = Application.StartupPath + "\green.mp3"
        WMP.controls.play()
        backupLineRED.Visible = True
        backupLineYELLOW.Visible = True
        backupLineGREEN.Visible = True
    End If

Dim totalDistance为布尔值=False
如果totalDistance 671和totalDistanceGotcha…也许这将满足您的需要：

    If totalDistance <= 210 Then
        'red
        If WMP.URL <> Application.StartupPath + "\red.mp3" Then
            WMP.URL = Application.StartupPath + "\red.mp3"
            WMP.controls.stop()
            WMP.controls.play()
            WMP.settings.setMode("loop", True)
        End If

        backupLineRED.Visible = True
        backupLineYELLOW.Visible = False
        backupLineGREEN.Visible = False
    ElseIf totalDistance > 210 And totalDistance <= 670 Then
        'yellow
        If WMP.URL <> Application.StartupPath + "\yellow.mp3" Then
            WMP.URL = Application.StartupPath + "\yellow.mp3"
            WMP.controls.stop()
            WMP.controls.play()
            WMP.settings.setMode("loop", True)
        End If

        backupLineRED.Visible = True
        backupLineYELLOW.Visible = True
        backupLineGREEN.Visible = False
    ElseIf totalDistance > 671 And totalDistance <= 1000 Then
        'green
        If WMP.URL <> Application.StartupPath + "\green.mp3" Then
            WMP.URL = Application.StartupPath + "\green.mp3"
            WMP.controls.stop()
            WMP.controls.play()
            WMP.settings.setMode("loop", True)
        End If

        backupLineRED.Visible = True
        backupLineYELLOW.Visible = True
        backupLineGREEN.Visible = True
    End If

If totalDistance 671和totalDistance每个If语句都需要进行检查，因为每个.mp3都需要循环，直到它位于不同的If语句中。