UTC DateTime error

Jan 19, 2014 at 3:36 PM
When I sent comment, I got below error in this line:

ContentCheck result = client.CheckContent(comment.Name, comment.Body);

NOT: TimestampFormat = "yyyy-MM-ddTHH:mm:ss.fffzz000";

ERROR:
Managed Debugging Assistant 'DateTimeInvalidLocalFormat' has detected a problem in 'C:\Program Files (x86)\IIS Express\iisexpress.exe'.

Additional information: A UTC DateTime is being converted to text in a format that is only correct for local times. This can happen when calling DateTime.ToString using the 'z' format specifier, which will include a local time zone offset in the output. In that case, either use the 'Z' format specifier, which designates a UTC time, or use the 'o' format string, which is the recommended way to persist a DateTime in text. This can also occur when passing a DateTime to be serialized by XmlConvert or DataSet. If using XmlConvert.ToString, pass in XmlDateTimeSerializationMode.RoundtripKind to serialize correctly. If using DataSet, set the DateTimeMode on the DataColumn object to DataSetDateTime.Utc.