more work on gtk & code cleanup

Pilz.Net/Api/ApiParameterCollection.cs

@@ -1,6 +1,4 @@
 using Pilz.Extensions.Collections;
-using System.Collections.Specialized;
-using System.Web;
 
 namespace Pilz.Net.Api;
 

Pilz.Net/Api/ApiServer.cs

@@ -96,7 +96,7 @@ public class ApiServer : IApiServer
         var httpListener = new HttpListener();
 
         httpListener.TimeoutManager.IdleConnection = new TimeSpan(0, 2, 0);
-        
+
         if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
         {
             httpListener.TimeoutManager.RequestQueue = new TimeSpan(0, 2, 0);

Pilz.Net/Api/Client/BaseChildItemClient.cs

@@ -9,7 +9,7 @@ public abstract class BaseChildItemClient<T>(IApiClient client) : BaseClient<T>(
     public abstract string ApiEndpointParent { get; }
     public abstract string ApiEndpointChild { get; }
 
-    public virtual async Task<IEnumerable<T>> GetAll(int parentId) 
+    public virtual async Task<IEnumerable<T>> GetAll(int parentId)
     {
         return (await client.SendRequest<GeneralItemMessages<T>.Items>($"{ApiEndpointParent}/{parentId}{ApiEndpointChild}", HttpMethod.Get)).EnsureOk().Items;
     }

Pilz.Net/Api/Client/BaseItemClient.cs

@@ -1,5 +1,4 @@
 using Pilz.Data;
-using Pilz.Net.Api.Messages;
 
 namespace Pilz.Net.Api.Client;
 

Pilz.Net/Api/Server/MaintenanceHandler.cs

@@ -1,7 +1,6 @@
 using Pilz.Extensions.Reflection;
 using Pilz.Net.Api.Messages;
 using System.Diagnostics;
-using System.Net;
 
 namespace Pilz.Net.Api.Server;
 
@@ -41,7 +40,7 @@ public class MaintenanceHandler : IApiHandlerInitializer
     {
         if (MaintenanceEnabled)
         {
-            
+
             // ...
         }
     }

Pilz.Net/ConnectionManagerBase.cs

@@ -7,7 +7,7 @@ namespace Pilz.Net;
 public abstract class ConnectionManagerBase(int port)
 {
     private const int HEADER_LENGTH = 12;
-    
+
     private bool listening = false;
     private readonly Dictionary<int, Dictionary<int, byte[]>> dicData = [];
 
@@ -122,13 +122,15 @@ public abstract class ConnectionManagerBase(int port)
             finalBuffer.Add((byte)(value >> 16 & 0xFF));
             finalBuffer.Add((byte)(value >> 8 & 0xFF));
             finalBuffer.Add((byte)(value & 0xFF));
-        };
+        }
+        ;
         void addHeader(int packageID, int packagesCount)
         {
             addInteger(dataID); // Data ID
             addInteger(packageID); // Package ID
             addInteger(packagesCount); // Packages Count
-        };
+        }
+        ;
 
         // Send data (this if statement and else content might be useless)
         if (data.Length > maxDataSize)

Pilz.Net/TCPManager.cs

@@ -5,7 +5,7 @@ namespace Pilz.Net;
 
 public class TCPManager(int port) : ConnectionManagerBase(port)
 {
-    private readonly TcpListener listener = new TcpListener(IPAddress.Any, port);
+    private readonly TcpListener listener = new(IPAddress.Any, port);
     public int BufferSize { get; set; } = 10240;
 
     public override void Start()