Azure web asp.net webapi 中的应用程序时区错误

Question

I have web app in azure paas environment. I need to convert the time in different timezone, i have following code which run perfectly fine on dev machine but when i deploy on azure paas environment it throw error

TimeZoneInfo serverTimeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById(TimeZone.CurrentTimeZone.StandardName);
                return TimeZoneInfo.ConvertTimeToUtc(_lastUpdatedDate.Value, serverTimeZoneInfo);

First line throw exception. Error getting value from 'DateCreated' on 'ViewModels.Orders.OrderActivityViewModel'

Answer 1

A few things:

• Don't use the TimeZone class. It is obsolete. Use only the TimeZoneInfo class.
• The StandardName is NOT the same as the Id for all cases. It is also impacted by OS language, where the Id is not.
• The local time zone's Id is at TimeZoneInfo.Local.Id , though there's no point in finding it by Id when you already have it. You'd just use TimeZoneInfo.Local .
• If you're just converting local time to UTC, you don't need to mess with time zones at all, just use .ToUniversalTime() on your original DateTime or DateTimeOffset value.
• The server's time zone probably already is UTC. That is the default in Azure anyway. Thus it isn't going to do anything at all.
• If necessary, you can change Azure App Service's WEBSITE_TIME_ZONE setting (on Windows only), but I don't recommend that. If you have a specific time zone in mind, then you would pass that ID into TimeZoneInfo.FindSystemTimeZoneById .
• As others pointed out, the error you reported isn't in the code you gave, so likely none of this is going to help you.