Try this:
System.Diagnostics.Process.Start("shutdown.exe", "-r -t 0");
This starts Windows’ inbuilt shutdown tool, which can also shut down or logoff a remote or the local machine.
Here is the list of full options from ss64.com:
Syntax
SHUTDOWN [logoff_option] [/m \\Computer] [options]
logoff_option:
/i Display the GUI (must be the first option)
/l Log off. This cannot be used with /m or /d option
/s Shutdown
/r Shutdown and Restart
/a Abort a system shutdown.
(only during the time-out period)
/p Turn off the local computer with no time-out or warning
(only with /d)
/h Hibernate the local computer (only with /f )
/e Document the reason for an unexpected shutdown of a computer
Options:
/m \\Computer : A remote computer to shutdown.
/t:xxx : Time until system shutdown in seconds.
The valid range is xxx=0-600 seconds. [default=30]
/c "Msg" : An optional shutdown message [Max 127 chars]
/f : Force running applications to close.
This will not prompt for File-Save in any open applications.
so will result in a loss of all unsaved data!!!
/d u:xx:yy : List a USER reason code for the shutdown.
/d P:xx:yy : List a PLANNED reason code for the shutdown.
xx Specifies the major reason code (0-255)
yy Specifies the minor reason code (0-65536)
You’ll probably notice that I have used the Linux/UNIX style of passing command-line arguments (using the ‘-‘) sign. On Windows, the convention is using “https://stackoverflow.com/”. This doesn’t matter – the program doesn’t care.