How to start a windows service not installed on computer via asp.net with c#?

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C#2.0

C#

ASP.NET

How to start a windows service not installed on computer via asp.net with c#?I am able to start the service installed in system.
My code as follows:
Under web.config

<identity impersonate="true">
     userName="Domain/Username" password="password" /></identity>

Under aspx.cs page

private void StartService(string serviceName, int timeoutMilliseconds)
    {
        Configuration objConfigFile;
        //getting an instance of the configuration file
        objConfigFile = WebConfigurationManager.OpenWebConfiguration(
                               HttpContext.Current.Request.ApplicationPath);

        //getting an instance of the "identity" section of the cofiguration file
        IdentitySection objIdentitySection =
          (IdentitySection)objConfigFile.GetSection("system.web/identity");

        if (objIdentitySection != null)
        {
            string username = objIdentitySection.UserName;
            string password = objIdentitySection.Password;
            bool impersonate = objIdentitySection.Impersonate;
            //Configuration currentConfiguration = objIdentitySection.C.CurrentConfiguration;

            //Obviously you won't be doing this. The lines below are just for testing purpose
         

            ServiceController service = new ServiceController(serviceName);
            try
            {
                TimeSpan timeout = TimeSpan.FromMilliseconds(timeoutMilliseconds);

                service.Start();
                service.WaitForStatus(ServiceControllerStatus.Running, timeout);
            }
            catch(Exception ex)
            {
                throw (ex);
            }
        }


    }