C#利用TimeSpan計(jì)算兩個(gè)時(shí)間之間的時(shí)間差 

傳入兩個(gè)時(shí)間參數(shù)即可得到準(zhǔn)確的時(shí)間差

public static string DateDiff(DateTime DateTime1, DateTime DateTime2)
    {
        string dateDiff = "";
        TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
        TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
        TimeSpan ts = (TimeSpan)(ts2 - ts1);  
        if (Convert.ToInt32(ts.Days.ToString()) < 0)
           dateDiff = "<font color=red>已經(jīng)過(guò)期</font>";
        else
            dateDiff = ts.Days.ToString() "天";
        return dateDiff;
    }

原文鏈接：C#利用TimeSpan計(jì)算兩個(gè)時(shí)間差