how to Start Windows Service with User Login Account

See more:

C#

C#4.0

Dear Friends,

Here i Developed Windows Service.Its Working Fine in Adminstrator Account But when comes to User Logins the Windows Service Getting an Exception.The Exception is cannot open service computer.I have Checked with app manifest file.its working but i dont want to use appmanifest file.Trough Code i want to acess the administrative previlages.So if any Information Regarding this please share with me.

foreach (ServiceController scrTemp in scr)
                {
                    if (scrTemp.ServiceName == "DEMIS_MSMS_SERVICE")
                    {
                      
                            flg = 1;
                            scrTemp.Refresh();
                            string str1 = scrTemp.Status.ToString();
                            if (str1 == "Running")
}
}

this is sample code but iam getting an exception cannot open DEMIS_MSMS_SERVICE on your computer
Regards,

Sravanthi