在asp.net中按当地时间显示欢迎消息

Question

我有以下代码，根据当前本地时间向用户显示Wishing消息。这在我的localhost中工作正常，但在上传到服务器后它显示服务器时间。如何将其转换为IST？

children

Answer 1

DateTime serverTime = DateTime.Now; // gives you current Time in server timeZone
DateTime utcTime = serverTime.ToUniversalTime; // convert it to Utc using timezone setting of server computer
TimeZoneInfo tzi = TimeZoneInfo.FindSystemTimeZoneById("India Standard Time");
DateTime localTime = TimeZoneInfo.ConvertTimeFromUtc(utcTime, tzi); // convert from utc to local
if (localTime  < 12) {
        lblGreeting.Text = "Good Morning";
        lblDate.Text = Convert.ToString(localTime );
    } else if (localTime  < 17) {
        lblGreeting.Text = "Good Afternoon";
        lblDate.Text = Convert.ToString(localTime );
    } else {
        lblGreeting.Text = "Good Evening";
        lblDate.Text = Convert.ToString(localTime );
    }

Answer 2

只需将您当前的时间转换为UTC＆amp;如果你想要IST，可以增加5.5小时

if (DateTime.UtcNow.AddHours(5.5).Hour < 12) {
    lblGreeting.Text = "Good Morning";
    lblDate.Text = Convert.ToString(DateTime.UtcNow.AddHours(5.5));
} else if (DateTime.UtcNow.AddHours(5.5).Hour < 17) {
    lblGreeting.Text = "Good Afternoon";
    lblDate.Text = Convert.ToString(DateTime.UtcNow.AddHours(5.5));
} else {
    lblGreeting.Text = "Good Evening";
    lblDate.Text = Convert.ToString(DateTime.UtcNow.AddHours(5.5));
}

Answer 3

IST比世界时间早5:30小时，因此您可以使用以下代码

       if (DateTime.Now.ToUniversalTime().AddHours(5).AddMinutes(30).Hour < 12)
        {
            lblGreeting.Text = "Good Morning";
            lblDate.Text = Convert.ToString(DateTime.Now);
        }
        else if (DateTime.Now.ToUniversalTime().AddHours(5).AddMinutes(30).Hour < 17)
        {
            lblGreeting.Text = "Good Afternoon";
            lblDate.Text = Convert.ToString(DateTime.Now);
        }
        else
        {
            lblGreeting.Text = "Good Evening";
            lblDate.Text = Convert.ToString(DateTime.Now);
        }