c# - DateTime 时间差和毫秒数

Question

我需要将两个日期时间的差异精确到毫秒比较，第一个日期时间将小于第二个，以停止 gridviews 删除事件中的循环

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
    if (!Ok2Delete(e.RowIndex)) return;    

    // your logic goes here and the above IF statement 
    // will hopefully guarantee your code to run once.
}
private bool Ok2Delete(int ri) // ri is the record index to be deleted
{
    if (Session["ri"] == null ||
        (!((ri == ((int)Session["ri"])) &&
        (DateTime.Now.Subtract((DateTime)Session["ri_time_stamp"]).Seconds < 2))))
    {
        Session["ri"] = ri;
        Session["ri_time_stamp"] = DateTime.Now;
        return true;
    }
    return false;
}

此代码未按预期工作

Answer 1

使用 .TotalSeconds...否则 122 TotalSeconds 的 TimeSpan 将是 2 秒。

private bool Ok2Delete(int ri) // ri is the record index to be deleted
{
    if (Session["ri"] == null ||
       (!((ri == ((int)Session["ri"])) &&
       (DateTime.Now.Subtract((DateTime)Session["ri_time_stamp"]).TotalSeconds < 2))))
    {
       Session["ri"] = ri;
       Session["ri_time_stamp"] = DateTime.Now;
       return true;
    }
    return false;
}