这是您正在寻找的解决方案：

 const string dateString = "2012-11-20T00:00:00Z"; var timezone = TimeZoneInfo.FindSystemTimeZoneById("W. Europe Standard Time"); //this timezone has an offset of +01:00:00 on this date var utc = DateTimeOffset.Parse(dateString); var result = TimeZoneInfo.ConvertTime(utc, timezone); Assert.AreEqual(result.Offset, new TimeSpan(1, 0, 0)); //the correct utc offset, in this case +01:00:00 Assert.AreEqual(result.UtcDateTime, new DateTime(2012, 11, 20, 0, 0, 0)); //equals the original date Assert.AreEqual(result.DateTime, new DateTime(2012, 11, 20, 1, 0, 0)); 

请注意，您错误地测试了.LocalDateTime属性 – 它始终将结果转换为计算机的本地时区。 您只需要.DateTime属性。

这是你想要的吗：

 [Test] public void ParseUtcDateTimeTest() { DateTime dateTime = DateTime.Parse("2012-11-20T00:00:00Z"); Assert.AreEqual(new DateTime(2012, 11, 20, 01, 00, 00), dateTime); DateTimeOffset dateTimeOffset = new DateTimeOffset(dateTime); Assert.AreEqual(new TimeSpan(0, 1, 0, 0), dateTimeOffset.Offset); } 

这对您的转换有用：

 [Test] public void ConvertTimeTest() {  DateTime dateTime = DateTime.Parse("2012-11-20T00:00:00Z");  TimeZoneInfo cstZone = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");  DateTime convertedTime = TimeZoneInfo.ConvertTime(dateTime, cstZone);  Assert.AreEqual(new DateTime(2012, 11, 19, 18, 00, 00), convertedTime);  TimeSpan baseUtcOffset = cstZone.BaseUtcOffset;  Assert.AreEqual(new TimeSpan(0, -6, 0, 0), baseUtcOffset); } 

 const String dateString = "2012-11-20T00:00:00Z"; var offsetDate = DateTimeOffset.Parse(dateString); var offsetDate2 = DateTime.Parse(dateString); 

输出是

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 offsetDate {20-11-2012 0:00:00 +00:00} System.DateTimeOffset offsetDate2 {20-11-2012 1:00:00} System.DateTime