Preliminary whitelist reload functionality present in agent gui, this is facilitated by the Prism 6 library.

WifiSitterGui/MainWindow.xaml

@@ -53,6 +53,13 @@
                     <ListBox x:Name="IgnoredNicsList"
                              Grid.Row="4"
                              ItemsSource="{Binding Whitelist, Mode=OneWay}" />
+                    <Button Grid.Row="4"
+                            Margin="4"
+                            Content="Reload"
+                            Command="{Binding ReloadWhitelist}"
+                            HorizontalAlignment="Right"
+                            VerticalAlignment="Top"/>
+
                 </Grid>
             </TabItem>
             

WifiSitterGui/TrayIconControl.xaml.cs

@@ -16,6 +16,7 @@ using System.Diagnostics;
 using WifiSitterGui.ViewModel;
 using WifiSitter;
 using WifiSitter.Model;
+using Prism.Events;
 
 namespace WifiSitterGui
 {
@@ -36,12 +37,13 @@ namespace WifiSitterGui
         public TrayIconControl() {
             InitializeComponent();
 
-            _agentVM = new WifiSitterAgentViewModel(new MainWindowViewModel());
+            this.Closing += (o, e) => { this.TaskBarIcon.Visibility = Visibility.Hidden; };
+
+            _agentVM = new WifiSitterAgentViewModel(EventAggregator);
             DataContext = _agentVM;
         }
 
         ~TrayIconControl() {
-            if (TaskBarIcon != null) TaskBarIcon.Visibility = Visibility.Hidden;
             TaskBarIcon?.Dispose();
         }
 
@@ -50,6 +52,15 @@ namespace WifiSitterGui
 
         #region properties
 
+        private IEventAggregator _eventAggregator;
+        internal IEventAggregator EventAggregator {
+            get {
+                if (_eventAggregator == null)
+                    _eventAggregator = new EventAggregator();
+
+                return _eventAggregator;
+            }
+        }
 
         #endregion  // properties
 

WifiSitterGui/ViewModel/Events/Events.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Prism.Events;
+
+namespace WifiSitterGui.ViewModel.Events
+{
+    public class ReloadWhitelistEvent : PubSubEvent { }
+}

WifiSitterGui/ViewModel/MainWindowViewModel.cs

@@ -6,9 +6,16 @@ using System.Net.NetworkInformation;
 using System.ServiceProcess;
 using System.Text;
 using System.Timers;
+using System.Windows.Input;
 
+// internal uings
 using WifiSitter;
 using WifiSitter.Model;
+using WifiSitterGui.ViewModel.Events;
+
+// 3rd party usings
+using Prism.Events;
+using WifiSitterGui.Helpers;
 
 namespace WifiSitterGui.ViewModel
 {
@@ -20,6 +27,8 @@ namespace WifiSitterGui.ViewModel
         private ServiceController _sc;
         private Timer _refreshProperties;
         private WifiSitterAgentViewModel _parent;
+        private RelayCommand _reloadWhitelistCommand;
+        private IEventAggregator _eventAggregator;
 
         #endregion  // fields
 
@@ -28,9 +37,10 @@ namespace WifiSitterGui.ViewModel
 
         public MainWindowViewModel() { }
 
-        public MainWindowViewModel (WifiSitterAgentViewModel Parent) {
-            _parent = Parent;
+        public MainWindowViewModel (IEventAggregator eventAggregator) {
 
+            _eventAggregator = eventAggregator;
+            
             _refreshProperties = new Timer();
             _refreshProperties.Interval = 1000 * 5;
             _refreshProperties.AutoReset = true;
@@ -114,6 +124,20 @@ namespace WifiSitterGui.ViewModel
         #endregion  // methods
 
 
+        #region commands
+
+        public ICommand ReloadWhitelist {
+            get {
+                return (_reloadWhitelistCommand != null) 
+                    ? _reloadWhitelistCommand 
+                    : _reloadWhitelistCommand = new RelayCommand(
+                        () => { _eventAggregator?.GetEvent<ReloadWhitelistEvent>().Publish(); });
+            }
+        }
+
+        #endregion  // commands
+
+
         #region eventhandlers
         #endregion  // methods
     }

WifiSitterGui/ViewModel/WifiSitterAgentViewModel.cs

@@ -13,10 +13,12 @@ using System.Net.NetworkInformation;
 using WifiSitter;
 using WifiSitter.Model;
 using WifiSitterGui.Helpers;
+using WifiSitterGui.ViewModel.Events;
 
 // 3rd party usings
 using NetMQ;
 using NetMQ.Sockets;
+using Prism.Events;
 
 namespace WifiSitterGui.ViewModel
 {
@@ -27,12 +29,14 @@ namespace WifiSitterGui.ViewModel
         private static MainWindowViewModel _windowVM;
         private RelayCommand _launchWindowCommand;
         private RelayCommand _takeFiveCommand;  // Asks service to pause for 5 minutes
+        private RelayCommand _reloadWhitelistCommand;  // Asks service to reload the nic whitelist
         private static MainWindow _statusGui;
         private static string _serviceChannel;
         private System.Timers.Timer _netstateCheckTimer;
         private static string _myChannel = String.Format("{0}-{1}", Process.GetCurrentProcess().Id, Process.GetCurrentProcess().ProcessName);
         private static DealerSocket _mqClient;
         private static NetMQPoller _poller;
+        private IEventAggregator _eventAggregator;
 
         #endregion  // fields
 
@@ -42,14 +46,16 @@ namespace WifiSitterGui.ViewModel
         }
 
 
-        public WifiSitterAgentViewModel(MainWindowViewModel WindowVM) {
+        public WifiSitterAgentViewModel(IEventAggregator eventtAggregator) {
+            _eventAggregator = eventtAggregator;
+            _eventAggregator?.GetEvent<ReloadWhitelistEvent>().Subscribe(() => { RequestReloadWhitelist(); });
+
             _windowVM = WindowVM;
             Intitialize();
         }
 
 
         private void Intitialize() {
-            
             // Get NetState
             RequestNetworkState();
 
@@ -78,7 +84,7 @@ namespace WifiSitterGui.ViewModel
 
         public MainWindowViewModel WindowVM {
             get { if (_windowVM == null) {
-                    _windowVM = new MainWindowViewModel();
+                    _windowVM = new MainWindowViewModel(_eventAggregator);
                 }
                 return _windowVM;
             }
@@ -141,6 +147,21 @@ namespace WifiSitterGui.ViewModel
         }
 
 
+        public void RequestReloadWhitelist() {
+            if (!String.IsNullOrEmpty(ServiceChannelName)) {
+                try {
+                    Trace.WriteLine("Checking for network state.");
+                    string request = new WifiSitterIpcMessage("reload_whitelist", _myChannel).ToJsonString();
+                    bool success = SendMessageToService(request);
+                    if (!success) Trace.WriteLine("Failed to send request reload_whitelist.");
+                }
+                catch (Exception e) {
+                    Trace.WriteLine(e.Message);
+                }
+            }
+        }
+
+
         private bool SendMessageToService(string msg) {
 
             // Initialize messaging componenets if needed.
@@ -175,6 +196,11 @@ namespace WifiSitterGui.ViewModel
             return  _mqClient.TrySendMultipartMessage(reqMessage);
         }
 
+
+        private void ReceiveCommand(ICommand cmd) {
+
+        }
+
         #endregion  // methods
 
         #region commands
@@ -200,6 +226,21 @@ namespace WifiSitterGui.ViewModel
         }
 
 
+        public ICommand SendReloadWhitelistRequest {
+            get {
+                if (_reloadWhitelistCommand == null) {
+                    _reloadWhitelistCommand = new RelayCommand(() => {
+                        var request = new WifiSitterIpcMessage("reload_whitelist", _myChannel).ToJsonString();
+                        bool success = SendMessageToService(request);
+                        if (!success) Trace.WriteLine("Failed to send reload_whitelist");
+                        // TODO need response validation mechanism
+                    });
+                }
+                return _reloadWhitelistCommand;
+            }
+        }
+
+
         public ICommand SendTakeFiveRequest {
             get {
                 if (_takeFiveCommand == null) {
@@ -236,7 +277,9 @@ namespace WifiSitterGui.ViewModel
             if (_sr != null) {
                 switch (_sr.Request) {
                     case "give_netstate":
-                        try { WindowVM.NetState = Newtonsoft.Json.JsonConvert.DeserializeObject<SimpleNetworkState>(Encoding.UTF8.GetString(_sr.Payload)); }
+                        try {
+                            _netstateTimer.Stop(); _netstateTimer.Start();
+                            WindowVM.NetState = Newtonsoft.Json.JsonConvert.DeserializeObject<SimpleNetworkState>(Encoding.UTF8.GetString(_sr.Payload)); }
                         catch { WifiSitter.WifiSitter.LogLine("Failed to deserialize netstate, payload."); }
                         break;
                     case "taking_five":

WifiSitterGui/WifiSitterGui.csproj

@@ -56,6 +56,10 @@
       <HintPath>..\packages\Newtonsoft.Json.9.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Prism, Version=6.2.0.0, Culture=neutral, PublicKeyToken=91a96d2a154366d8, processorArchitecture=MSIL">
+      <HintPath>..\packages\Prism.Core.6.2.0\lib\net45\Prism.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
@@ -96,6 +100,7 @@
     <Compile Include="TrayIconControl.xaml.cs">
       <DependentUpon>TrayIconControl.xaml</DependentUpon>
     </Compile>
+    <Compile Include="ViewModel\Events\Events.cs" />
     <Compile Include="ViewModel\WifiSitterAgentViewModel.cs" />
     <Compile Include="View\About.xaml.cs">
       <DependentUpon>About.xaml</DependentUpon>

WifiSitterGui/packages.config

@@ -4,4 +4,5 @@
   <package id="Hardcodet.NotifyIcon.Wpf" version="1.0.8" targetFramework="net452" />
   <package id="NetMQ" version="3.3.3.4" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net452" />
+  <package id="Prism.Core" version="6.2.0" targetFramework="net452" />
 </packages>