added exception handling, fixes errors when waking up, or missing network

analog_system_monitor_dotnet/UdpSender.cs

@@ -46,9 +46,30 @@ public class UdpSender : IDisposable
 
     public void SendFloats(float[] values)
     {
-        string packet = string.Join(",", values);
-        byte[] data = System.Text.Encoding.ASCII.GetBytes(packet);
-        client.Send(data, data.Length, endpoint);
+        try
+        {
+            string packet = string.Join(",", values);
+            byte[] data = System.Text.Encoding.ASCII.GetBytes(packet);
+
+            client.Send(data, data.Length, endpoint);
+        }
+        catch (SocketException ex) when (
+            ex.SocketErrorCode == SocketError.NetworkUnreachable ||
+            ex.SocketErrorCode == SocketError.HostUnreachable ||
+            ex.SocketErrorCode == SocketError.NetworkDown ||
+            ex.SocketErrorCode == SocketError.AddressNotAvailable)
+        {
+            // Network not ready (sleep, reconnecting, etc.)
+            // Skip this tick silently.
+        }
+        catch (ObjectDisposedException)
+        {
+            // App is shutting down — ignore.
+        }
+        catch (Exception)
+        {
+            // Any other unexpected error — swallow to avoid crashing the tray app.
+        }
     }
 
     public void Dispose()