} // recCallBack
/// <summary>
/// 回调函数发:送数据
/// </summary>
/// <param name="ar">the ar</param>
public static void sendCallBack(IAsyncResult ar)
{
// 当前用户实例
User currentUser = User.GetInstance();
SendCallBackParam sendCallBackParam = (SendCallBackParam)ar.AsyncState;
ListBox lstBox_recMsg = sendCallBackParam.lstBox_recMsg;
string strSend = sendCallBackParam.strSend;
DelegateMem.AppendDelegate appendString = sendCallBackParam.appendString;
try
{
//异步通信 结束数据的异步发送
currentUser.socket.EndSend(ar);
strSend = "发：" + strSend;
// 在右侧显示
string showStr = strSend.PadLeft(lstBox_recMsg.Width / 10, ' ');
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, showStr);
} // try
catch (System.Exception ex)
{
SocketHandler.ShutDownConn(currentUser.socket);
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, "服务器断开了TCP连接");
} // catch
} // sendCallBack
} // recvCallBack
/// <summary>
/// 发送数据
/// </summary>
/// <param name="frd"></param>
/// <param name="strData"></param>
private static void sendData(MyFriend frd, string strData)
{
// 获取在线用户列表的实例
Friends friends = Friends.GetInstance();
try
{
byte[] msg = Encoding.UTF8.GetBytes(strData);
//初始化相关参数
SendCallBackParam sendCallBackParam = new SendCallBackParam(frd);
//异步调用
AsyncCallback callBack = new AsyncCallback(CallBackFunc.sendCallBack);
frd.socket.BeginSend(msg, 0, msg.Length, SocketFlags.None, callBack, sendCallBackParam);
} // try
catch (System.Exception ex)
{
lock (friends)
{
friends.friendList.Remove(frd);
}
frd.Dispose();
} // catch
} // sendData
} // btn_sendMsg_Click
/// <summary>
/// 群聊通信
/// </summary>
private void sendData()
{
User currentUser = User.GetInstance();
try
{
string finalStr = BuildMsg.buildSendMsg("group", userName, currentUser.socket.LocalEndPoint.ToString(), destName, str_Send);
byte[] msg = Encoding.UTF8.GetBytes(finalStr);
//始化需要传入的参数
SendCallBackParam sendCallBackParam = new SendCallBackParam(
str_Send,
lstBox_recMsg,
appendString);
// 定制并实例化回调方法
AsyncCallback callBack = new AsyncCallback(CallBackFunc.sendCallBack);
// 开始异步发送数据
currentUser.socket.BeginSend(msg, 0, msg.Length, SocketFlags.None, callBack, sendCallBackParam);
} // try
catch (System.Exception ex)
{
SocketHandler.ShutDownConn(currentUser.socket);
lstBox_recMsg.Invoke(appendString, lstBox_recMsg, "服务器断开了TCP连接");
} // catch
} // sendData
} // sendData
/// <summary>
/// 发送消息
/// </summary>
/// <param name="ar"></param>
public static void sendCallBack(IAsyncResult ar)
{
// 初始化关键参数
Friends friends = Friends.GetInstance();
SendCallBackParam sendCallBackParam = (SendCallBackParam)ar.AsyncState;
MyFriend frd = sendCallBackParam.frd;
try
{
frd.socket.EndSend(ar);
} // try
catch (System.Exception ex)
{
lock (friends)
{
friends.friendList.Remove(frd);
}
frd.Dispose();
} // catch
} // sendCallBac
