Added tray icon

DnsServerTrayIcon/WindowsServiceController.cs

@@ -0,0 +1,72 @@
+using System.Linq;
+using System.ServiceProcess;
+
+namespace DnsServerTrayIcon
+{
+    public class WindowsServiceController
+    {
+        private readonly string _serviceName;
+
+        public WindowsServiceController(string serviceName)
+        {
+            _serviceName = serviceName;
+        }
+
+        public void Restart()
+        {
+            Stop();
+            Start();
+        }
+
+        public void Stop()
+        {
+            try
+            {
+                using (var service = new ServiceController(_serviceName))
+                {
+                    service.Stop();
+                    service.WaitForStatus(ServiceControllerStatus.Stopped);
+                }
+            }
+            catch
+            { }
+        }
+
+        public void Start()
+        {
+            try
+            {
+                using (var service = new ServiceController(_serviceName))
+                {
+                    service.Start();
+                    service.WaitForStatus(ServiceControllerStatus.Running);
+                }
+            }
+            catch
+            { }
+        }
+
+        public bool IsRunning => Status == ServiceControllerStatus.Running;
+
+        public bool IsStopped => Status == ServiceControllerStatus.Stopped;
+
+        public ServiceControllerStatus Status
+        {
+            get
+            {
+                using (var service = new ServiceController(_serviceName))
+                {
+                    return service.Status;
+                }
+            }
+        }
+
+        public bool IsInstalled
+        {
+            get
+            {
+                return ServiceController.GetServices().Any(s => s.ServiceName == _serviceName);
+            }
+        }
+    }
+}