chat function

Chat/Client/ChatRoomForm.cs

@@ -25,17 +25,18 @@ namespace Client
 			lbxUser.Items.Add(Singleton.Instance.Nickname);
 			Singleton.Instance.UserEnterResponsed += UserEnterResponsed;
 			Singleton.Instance.UserLeaveResponsed += UserLeaveResponsed;
+			Singleton.Instance.ChatResponsed += ChatResponsed;
 		}
 
-		private void btmSend_Click(object sender, EventArgs e)
+		private async void btmSend_Click(object sender, EventArgs e)
 		{
 			if (string.IsNullOrEmpty(tbxMsg.Text))
 				return;
 
-			lbxMsg.Items.Add(tbxMsg.Text);
-			tbxMsg.Text = null;
+			ChatPacket packet = new ChatPacket(Singleton.Instance.Nickname, tbxMsg.Text);
+			await Singleton.Instance.SendAsync(packet.Serialize(), SocketFlags.None);
 
-			ScrollMsgToEnd();
+			tbxMsg.Text = null;
 		}
 
 		private void ScrollMsgToEnd()
@@ -83,10 +84,24 @@ namespace Client
 			});
 		}
 
+		private void ChatResponsed(object? sender, EventArgs e)
+		{
+			if (sender == null)
+				return;
+
+			ChatPacket packet = (ChatPacket)sender;
+			InvokeMethod(() =>
+			{
+				lbxMsg.Items.Add($"{packet.NickName}: {packet.Message}");
+				ScrollMsgToEnd();
+			});
+		}
+
 		private async void ChatRoomForm_FormClosing(object sender, FormClosingEventArgs e)
 		{
 			Singleton.Instance.UserEnterResponsed -= UserEnterResponsed;
 			Singleton.Instance.UserLeaveResponsed -= UserLeaveResponsed;
+			Singleton.Instance.ChatResponsed -= ChatResponsed;
 			
 			UserLeavePacket packet = new UserLeavePacket(Singleton.Instance.Nickname);
 			await Singleton.Instance.SendAsync(packet.Serialize(), SocketFlags.None);

Chat/Client/LoginForm.cs

@@ -60,6 +60,7 @@ namespace Client
 			else
 			{
 				Singleton.Instance.Socket.Shutdown(SocketShutdown.Send);
+				MessageBox.Show("Fail to login");
 			}
 		}
 	}

Chat/Client/Singleton.cs

@@ -23,6 +23,7 @@ namespace Client
 		public event EventHandler? EnterRoomResponsed;
 		public event EventHandler? UserEnterResponsed;
 		public event EventHandler? UserLeaveResponsed;
+		public event EventHandler? ChatResponsed;
 
 		public async Task ConnectAsync(string ip, int port)
 		{
@@ -100,6 +101,11 @@ namespace Client
 					UserLeavePacket packet = new UserLeavePacket(dataBuffer);
 					UserLeaveResponsed?.Invoke(packet, EventArgs.Empty);
 				}
+				else if (packetType == PacketType.Chat)
+				{
+					ChatPacket packet = new ChatPacket(dataBuffer);
+					ChatResponsed?.Invoke(packet, EventArgs.Empty);
+				}
 			}
 		}
 	}