2段VB程序如何翻译为VC#，，我翻出来老报2个地方的小错

Question

<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
        Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
        Select Case (m.Msg)
            ' The WM_ACTIVATEAPP message occurs when the application
            ' becomes the active application or becomes inactive.
        Case WM_FILE_END
                Dim i As Integer
                i = objR.QN_StopPlay(0)
                i = objR.QN_CloseFile(0)
                mnuStopPlay.Enabled = False
                RemoveHandler objBackImage.BackImageChange, AddressOf BackImageChange
                objBackImage.Bestop()
                objBackImage = Nothing
        End Select
        MyBase.WndProc(m)
    End Sub以上是第1段Private Sub TrackBar1_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar1.ValueChanged
        GroupBox5.Text = "灵敏度调整(高灵敏0级——>低灵敏10级)  " & TrackBar1.Value.ToString & "级"
        RaiseEvent ChangeLevel(Me, TrackBar1.Value)
    End Sub以上是第2段这2段是连在一起有互相联系的，我翻成C#的时候总报标识符错，望有高人指点

Answer 1

在Page_Load里加TrackBar1.ValueChanged += new System.EventHandler(TrackBar1_ValueChanged);
然后 private void TrackBar1_ValueChanged(object sender , System.EventArgs e )
{
GroupBox5.Text = "灵敏度调整(高灵敏0级——>低灵敏10级)  "+ TrackBar1.Value.ToString() + "级";
ChangeLevel(this, TrackBar1.Value);
}

Answer 2

参考
http://blog.csdn.net/whqsz/archive/2005/05/08/373415.aspx