Question

一旦我点击一个按钮，我就会尝试每天都有一个特定的动作，但是为了测试目的，我试图让它每20秒发生一次，只是为了看它是否有效。目前，没有任何反应，我不知道我哪里出错了。

  public void AddIncoming_Click(object sender, EventArgs e)
    {
        if (frequencyIncoming.SelectedValue == "Weekly")
        {
            DateTime weekly = DateTime.Now;
            for (DateTime current = weekly; current == current.AddSeconds(20);)
            {
                //totalCalculation = (totalCalculation + Convert.ToDouble(costIncoming));
                ClientScript.RegisterStartupScript(this.GetType(), "myalert", "alert('" + DateTime.Now + "');", true);
            }

        }

        SqlCommand cmd = new SqlCommand("insert into Incomings (AspNetUsersId,IncType,IncDate,IncCost,IncFrequency) values (@AspNetUsersId, @IncType, @IncDate, @IncCost, @IncFrequency)");

        cmd.Parameters.AddWithValue("@AspNetUsersId", userId);
        cmd.Parameters.AddWithValue("@IncType", typeIncoming.Text);
        cmd.Parameters.AddWithValue("@IncDate", lblCalendar.Text);
        cmd.Parameters.AddWithValue("@IncCost", costIncoming.Text);
        cmd.Parameters.AddWithValue("@IncFrequency", frequencyIncoming.Text);

        loadDatabase(cmd);

        Response.Redirect(Request.Url.AbsoluteUri);

    }

非常感谢任何信息！干杯

Answer 1

编辑：实际上，只是执行此操作（如果您可以检测到程序正在关闭，可能会设置一些逻辑来设置“keepLooping = false”）：

public void AddIncoming_Click(object sender, EventArgs e)
{
    if (frequencyIncoming.SelectedValue == "Weekly")
    {
        DateTime weekly = DateTime.Now;
        TimeSpan timeToWait = new TimeSpan(0, 0, 0, 5); // days, hours, minutes, seconds
        bool keepLooping = true;
        while (keepLooping)
        {
            if (DateTime.Now.Subtract(weekly) < timeToWait)
            {
                //sleep 1 second while waiting so cpu doesn't spin at maximum
                System.Threading.Thread.Sleep(1000);
            }
            else
            {
                // this code will run every ~timeToWait
                Console.WriteLine($"{DateTime.Now.Subtract(weekly)} seconds have elapsed.");
                weekly = DateTime.Now;
            }
        }
    }

    SqlCommand cmd = new SqlCommand("insert into Incomings (AspNetUsersId,IncType,IncDate,IncCost,IncFrequency) values (@AspNetUsersId, @IncType, @IncDate, @IncCost, @IncFrequency)");

    cmd.Parameters.AddWithValue("@AspNetUsersId", userId);
    cmd.Parameters.AddWithValue("@IncType", typeIncoming.Text);
    cmd.Parameters.AddWithValue("@IncDate", lblCalendar.Text);
    cmd.Parameters.AddWithValue("@IncCost", costIncoming.Text);
    cmd.Parameters.AddWithValue("@IncFrequency", frequencyIncoming.Text);

    loadDatabase(cmd);

    Response.Redirect(Request.Url.AbsoluteUri);

}

在Asp.Net C＃中每20秒按一次按钮就会发生事件

1 个答案: