Timeline for Retrieve system uptime using C#
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
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| Jul 31, 2019 at 21:08 | comment | added | Guido Kleijer | This function does not return the Uptime, it returns the duration between last restart and now. Turning the computer on and of does not affect this behaviour. | |
| Mar 11, 2018 at 22:15 | comment | added | wilson0x4d |
@Rbjz usually qualifying an answer with "using C#" means the OP is not looking for an answer that requires anything not already present in the .NET Framework. As of 2009 this was the simplest C# method for acquiring a non-overflowing "uptime" -- alternatives included querying WMI and scanning the System Event Log for a boot record.. and by comparison this method is the "simplest" and would work over all versions of Windows supported by .NET Not "using C#" requires PInvoke; GetTickCount64 (not in all Windows vers) or ZwQuerySystemInformation (undoc), or sysinfo (on posix+SVR4 systems)
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| May 29, 2017 at 19:47 | comment | added | Robert Cutajar | I object that this is 'a simple way'. On top of it, try run it on *nix. | |
| Jul 24, 2013 at 0:41 | comment | added | Oliver Bock |
Get localised names (2 = System, 674 = System Up Time) using: StringBuilder buffer = new StringBuilder(1024); uint buf_size = (uint)buffer.Capacity; Win32.PdhLookupPerfNameByIndex(null, id, buffer, ref buf_size); return buffer.ToString();
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| Mar 5, 2013 at 0:44 | comment | added | abatishchev | What if counter name is localized? | |
| Jun 9, 2009 at 20:34 | vote | accept | ProgrammingPope | ||
| Jun 9, 2009 at 20:12 | comment | added | SLaks | The first call to uptime.NextValue will return 0. | |
| Jun 9, 2009 at 19:58 | history | answered | SLaks | CC BY-SA 2.5 |