how to install/un-install windows service?

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe -U "E:\testproject\FileService\bin\Release\FileService.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe -I "E:\testproject\FileService\bin\Release\FileService.exe"

go to service and right click on windows service and go to properties and set usernmae and password