tcpipSocket/Chat/Client/LoginForm.cs

using Core;
using System.Net.Sockets;

namespace Client
{
	public partial class LoginForm : Form
	{
		public LoginForm()
		{
			InitializeComponent();
			InitInstance();
		}

		private void InitInstance()
		{
			Singleton.Instance.LoginResponsed += LoginResponsed;
			FormClosing += LoginForm_FormClosing;
		}

		private void LoginForm_FormClosing(object? sender, FormClosingEventArgs e)
		{
			Singleton.Instance.LoginResponsed -= LoginResponsed;
		}

		private async void btnLogin_Click(object sender, EventArgs e)
		{
			string id = tbxId.Text;
			string nickname = tbxNickname.Text;
			if (string.IsNullOrEmpty(id) || string.IsNullOrEmpty(nickname))
			{
				MessageBox.Show("Please input ID and Nickname.");
				return;
			}

			await Singleton.Instance.ConnectAsync("127.0.0.1", 20000);

			Singleton.Instance.Id = id;
			Singleton.Instance.Nickname = nickname;

			LoginRequestPacket packet = new LoginRequestPacket(id, nickname);
			await Singleton.Instance.SendAsync(packet.Serialize(), SocketFlags.None);
		}

		private void LoginResponsed(object? sender, EventArgs e)
		{
			if (sender == null)
				return;

			LoginResponsePacket packet = (LoginResponsePacket)sender;
			MessageBox.Show(packet.Code.ToString());
			if (packet.Code != StatusCode.Success)
			{
				RoomListForm roomListForm = new RoomListForm();
				roomListForm.ShowDialog();
			}
			else
			{
				Singleton.Instance.Socket.Shutdown(SocketShutdown.Send);
			}
		}
	}
}