private void btn_upload_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
OpenFileDialog Dlg = new OpenFileDialog();
FileInfo FI;
Dlg.Filter = "所有文件(*.*)|*.*";
Dlg.CheckFileExists = true;
if (Dlg.ShowDialog() == DialogResult.OK)
{
FI = new FileInfo(Dlg.FileName);
if (FI.Length == 0)
{
MessageBox.Show("不可上传空文件");
}
else
{
string info = string.Join(SEPARATOR + "", new string[] { MessageType.FileMessage + "", COMPUTER_NAME, IP_ADDRESS, Dlg.FileName, FI.Length + "" });
UdpSendMessage.SendToAll(info);
}
}
else
{
MessageBox.Show("取消上传");
}
}
public static void IntervalBroadcast()
{
IntPtr charRoom = Win32API.FindWindow(null, "Чат групи LAN");
string info = string.Join(ChatRoom.SEPARATOR + "", new string[] { MessageType.Broadcast + "", ChatRoom.COMPUTER_NAME, ChatRoom.IP_ADDRESS });
while (true)
{
Win32API.SendMessage(charRoom, (int)MessageType.ClearUsers, 0, 0);
UdpSendMessage.SendToAll(info);
Thread.Sleep(BROADCAST_INTERVAL);
}
}
private void btn_send_Click(object sender, EventArgs e)
{
string data = message_chat.Text.Trim();
if (data == String.Empty)
{
MessageBox.Show("发送不能为空！");
}
else
{
string info = string.Join(SEPARATOR + "", new string[] { MessageType.ChatMessage + "", COMPUTER_NAME, IP_ADDRESS, data });
UdpSendMessage.SendToAll(info);
}
message_chat.Clear();
}
public static void StartListen()
{
UdpClient udpClient = new UdpClient(ChatRoom.LISTEN_PORT);
IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Any, 0);
IntPtr charRoom = Win32API.FindWindow(null, ChatRoom.WINDOWS_NAME);
while (true)
{
byte[] buff = udpClient.Receive(ref ipEndPoint);
string tmpInfo = Encoding.Default.GetString(buff);
string[] infos = tmpInfo.Split(ChatRoom.SEPARATOR);
MessageType messageType = (MessageType)Enum.Parse(typeof(MessageType), infos[0]);
switch (messageType)
{
case MessageType.Broadcast:
{
string computerName = infos[1];
string ipAddress = infos[2];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress });
Win32API.SendMessage(charRoom, (int)MessageType.Broadcast, 0, ref lp);
string myInfo = string.Join(ChatRoom.SEPARATOR + "", new string[] { MessageType.BroadcastReply + "", ChatRoom.COMPUTER_NAME, ChatRoom.IP_ADDRESS });
UdpSendMessage.SendToOne(ipAddress, myInfo);
}
break;
case MessageType.BroadcastReply:
{
string computerName = infos[1];
string ipAddress = infos[2];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress });
Win32API.SendMessage(charRoom, (int)MessageType.BroadcastReply, 0, ref lp);
}
break;
case MessageType.ChatMessage:
{
string computerName = infos[1];
string ipAddress = infos[2];
string chatData = infos[3];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress, chatData });
Win32API.SendMessage(charRoom, (int)MessageType.ChatMessage, 0, ref lp);
}
break;
case MessageType.FileMessage:
{
string computerName = infos[1];
string ipAddress = infos[2];
string filePath = infos[3];
string fileSize = infos[4];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress, filePath, fileSize });
Win32API.SendMessage(charRoom, (int)MessageType.FileMessage, 0, ref lp);
}
break;
default:
break;
}
}
}