Boilerplate to handle starting/stopping WpkgInstaller service

WpkgInstaller/WpkgInstaller.cs

-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Diagnostics;
-using System.Linq;
+using System.Runtime.InteropServices;
 using System.ServiceProcess;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace WpkgInstaller
 {
+    public enum ServiceState
+    {
+        SERVICE_STOPPED = 0x00000001,
+        SERVICE_START_PENDING = 0x00000002,
+        SERVICE_STOP_PENDING = 0x00000003,
+        SERVICE_RUNNING = 0x00000004,
+        SERVICE_CONTINUE_PENDING = 0x00000005,
+        SERVICE_PAUSE_PENDING = 0x00000006,
+        SERVICE_PAUSED = 0x00000007,
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct ServiceStatus
+    {
+        public int dwServiceType;
+        public ServiceState dwCurrentState;
+        public int dwControlsAccepted;
+        public int dwWin32ExitCode;
+        public int dwServiceSpecificExitCode;
+        public int dwCheckPoint;
+        public int dwWaitHint;
+    };
     public partial class WpkgInstaller : ServiceBase
     {
+
+        [DllImport("advapi32.dll", SetLastError = true)]
+        private static extern bool SetServiceStatus(System.IntPtr handle, ref ServiceStatus serviceStatus);
         public WpkgInstaller()
         {
             InitializeComponent();
@@ -19,10 +37,24 @@ namespace WpkgInstaller
 
         protected override void OnStart(string[] args)
         {
+            ServiceStatus serviceStatus = new ServiceStatus();
+            serviceStatus.dwCurrentState = ServiceState.SERVICE_START_PENDING;
+            serviceStatus.dwWaitHint = 100000;
+            SetServiceStatus(this.ServiceHandle, ref serviceStatus);
+
+            serviceStatus.dwCurrentState = ServiceState.SERVICE_RUNNING;
+            SetServiceStatus(this.ServiceHandle, ref serviceStatus);
         }
 
         protected override void OnStop()
         {
+            ServiceStatus serviceStatus = new ServiceStatus();
+            serviceStatus.dwCurrentState = ServiceState.SERVICE_STOP_PENDING;
+            serviceStatus.dwWaitHint = 100000;
+            SetServiceStatus(this.ServiceHandle, ref serviceStatus);
+
+            serviceStatus.dwCurrentState = ServiceState.SERVICE_STOPPED;
+            SetServiceStatus(this.ServiceHandle, ref serviceStatus);
         }
     }
 }