C# 每x次更改一次图像路径

例如，我如何重复下面的代码，使图像路径每两秒钟更改一次

OleDbCommand cmd = new OleDbCommand("SELECT TOP 1 userdaten.image FROM userdaten ORDER BY Rnd(ID)", con);

        con.Open();
        OleDbDataReader dr = cmd.ExecuteReader();

        if (dr.HasRows)
        {
            while (dr.Read()) { PictureTrainLabel.Text = "~/Image/" + dr["image"].ToString(); }

            PictureTrain.ImageUrl = PictureTrainLabel.Text;


        }
        con.Close();

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您需要将该代码放入计时器中，这样您就可以每两秒钟运行一次。我不确定你打算如何改变这条路径，因为我不确定你的意思，但逻辑可以在OnTimedEvent中完成

    private static System.Timers.Timer aTimer;

    private static void SetTimer()
    {
        // Create a timer with a two second interval.
        aTimer = new System.Timers.Timer(2000);
        // Hook up the Elapsed event for the timer. 
        aTimer.Elapsed += OnTimedEvent;
        aTimer.AutoReset = true;
        aTimer.Enabled = true;
    }

    private static void OnTimedEvent(Object source, ElapsedEventArgs e)
    {
        OleDbCommand cmd = new OleDbCommand("SELECT TOP 1 userdaten.image FROM userdaten ORDER BY Rnd(ID)", con);

        con.Open();
        OleDbDataReader dr = cmd.ExecuteReader();

        if (dr.HasRows)
        {
            while (dr.Read()) { PictureTrainLabel.Text = "~/Image/" + dr["image"].ToString(); }

            PictureTrain.ImageUrl = PictureTrainLabel.Text;


        }
        con.Close();
    }

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“PictureTrainLabel.Text”-这是Winforms应用程序吗？不是，它在浏览器中运行