I have a DateTime which I want to format to "2009-09-01T00:00:00.000Z", but the following code gives me "2009-09-01T00:00:00.000+01:00" (both lines):
new DateTime(2009, 9, 1, 0, 0, 0, 0, DateTimeKind.Utc).ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffzzz")
new DateTime(2009, 9, 1, 0, 0, 0, 0, DateTimeKind.Utc).ToUniversalTime().ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffzzz")
Any ideas how to make it work?
string foo = yourDateTime.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ");
The best format to use is "yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffK".
The last K on string will be changed to 'Z' if the date is UTC or with timezone (+-hh:mm) if is local. (http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx)
As LukeH said, is good to use the ToUniversalTime if you want that all the dates will be UTC.
The final code is:
string foo = yourDateTime.ToUniversalTime()
.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffK");