Convert WMI Win32_OperatingSystem InstallDate to mm/dd/yyyy format (C# – WPF)
The System.Management.ManagementDateTimeConverter class was made to solve your problem. Use its ToDateTime() method. It properly parses milliseconds and the UTC offset in the string: DateTime dt = System.Management.ManagementDateTimeConverter.ToDateTime(“20100131022308.000000-360”); Console.WriteLine(dt); Output: 1/31/2010 2:23:08 AM