Electron.NET/src/ElectronNET.API/API/WebRequest.cs

using System;

namespace ElectronNET.API.Entities
{
    public class OnBeforeRequestDetails
    {
        public int Id { get; set; }
        public string Url { get; set; }
        public string Method { get; set; }

        public int? WebContentsId { get; set; }
        // Ensure all necessary properties are included as per Electron documentation
    }

    public class WebRequestFilter
    {
        public string[] Urls { get; set; }
    }

    public class WebRequest
    {
        public int Id { get; private set; }

        internal WebRequest(int id)
        {
            Id = id;
        }

        private event Action<OnBeforeRequestDetails, Action<object>> _onBeforeRequest;

        public void OnBeforeRequest(WebRequestFilter filter, Action<OnBeforeRequestDetails, Action<object>> listener)
        {
            if (_onBeforeRequest == null)
            {
                BridgeConnector.Socket.On<System.Text.Json.JsonElement>($"webContents-session-webRequest-onBeforeRequest{Id}",
                    (args) =>
                    {
                        //// var details0 = args[0].Deserialize<OnBeforeRequestDetails>(ElectronNET.API.Serialization.ElectronJson.Options);
                        var details = System.Text.Json.JsonSerializer.Deserialize<OnBeforeRequestDetails>(args, Serialization.ElectronJson.Options);
                        var callback = (Action<object>)((response) => { BridgeConnector.Socket.Emit($"webContents-session-webRequest-onBeforeRequest-response{Id}", response); });

                        _onBeforeRequest?.Invoke(details, callback);
                    });

                BridgeConnector.Socket.Emit("register-webContents-session-webRequest-onBeforeRequest", Id, filter);
            }

            _onBeforeRequest += listener;
        }

        public void RemoveListener(Action<OnBeforeRequestDetails, Action<object>> listener)
        {
            _onBeforeRequest -= listener;
            if (_onBeforeRequest == null)
            {
                BridgeConnector.Socket.Off($"webContents-session-webRequest-onBeforeRequest{Id}");
            }
        }
    }
}