private void LoadListBox()
{
FriList.BeginUpdate();//数据更新，UI暂时挂起，直到EndUpdate绘制控件，可以有效避免闪烁并大大提高加载速度
for (int i = 0; i < FriendsNum; i++)
{
String NewItemName = String.Format("{0} ({1})", FriendInfo[i].nickname, FriendInfo[i].id);
ListViewItem user = new ListViewItem();
user.Text = NewItemName;
user.ImageIndex = i;
FriList.Items.Add(user);
}
FriList.EndUpdate();
}
private void ServerResponse()//响应服务器的命令
{
//定义一个byte数组，用于接收从服务器端发来的数据
//每次所能接受的数据包的最大长度为1024个字节
byte[] buff = new byte[1024];
string msg;
int len;
try
{
if (Stream.CanRead == false)
{
return;
}
stopFlag = false;
while (!stopFlag)
{
//从流中得到数据，并存入到buff字符数组中
len = Stream.Read(buff, 0, buff.Length);
if (len < 1)
{
Thread.Sleep(200);
continue;
}
msg = Encoding.GetEncoding("gb2312").GetString(buff, 0, len);
msg.Trim();
string[] tokens = msg.Split(new char[] { '|' });
//把命令分解开 tokens[0]为命令类型
//下面为处理各种命令
if (tokens[0].ToUpper() == "PRIV")
{
string sender = tokens[1];
string content = tokens[3];
string time = tokens[4];
int i;
for (i = 0; FriendInfo[i].id != sender; i++)
{
;
}
if (FriendInfo[i].chat == null || FriendInfo[i].chat.Visible == false)
{
//窗口未打开的情况
hashtable.Add((count++), sender + "(" + time + ")" + "\t" + content + "\n");
MessageBox.Show("您收到一条新消息,请进入消息中心");
}
else
{
string addmsg = (sender + "(" + time + ")" + "\n" + content + "\n");
FriendInfo[i].chat.MsgReceived.AppendText(addmsg);
}
}
else if (tokens[0].ToUpper() == "OKPRIV")
{
string receiver = tokens[1];
string content = tokens[2];
int i;
for (i = 0; FriendInfo[i].id != receiver; i++)
{
;
}
if (FriendInfo[i].chat == null || FriendInfo[i].chat.Visible == false)
{
//如果窗口没有打开 待处理
}
else
{
string addmsg = "\"" + content + "\"" + "(已成功发送)\n";
FriendInfo[i].chat.MsgReceived.AppendText(addmsg);
}
}
else if (tokens[0].ToUpper() == "DOWNLOAD")
{
hashtable.Add(hashtable.Count + 1, tokens[1]);
}
else if (tokens[0].ToUpper() == "VIBRATE")
{
string sender = tokens[1];
int i;
for (i = 0; FriendInfo[i].id != sender; i++)
{
;
}
if (FriendInfo[i].chat == null)
{
FriendInfo[i].chat = new Chat(FriendInfo[i]);
}
FriendInfo[i].chat.Show();
FriendInfo[i].chat.MsgReceived.AppendText("Receive窗口震动\n");
FriendInfo[i].chat.vibrate();
}
else if (tokens[0].ToUpper() == "LIST")
{
//暂时未定义
//此时从服务器返回的消息格式：命令标志符LIST|用户名1|用户名2|。。（所有在线用户名）
/*lstUsers.Items.Clear();
* for (int i = 1; i < tokens.Length - 1; i++)
* {
* lstUsers.Items.Add(tokens[i].Trim());
* }*/
}
else if (tokens[0] == "FRIREQ")
{
string id = tokens[1];
string content = tokens[3];
ReceiveRequest rr = new ReceiveRequest(id, content);
rr.ShowDialog();
if (rr.DialogResult == DialogResult.OK)
{
MessageBox.Show("接受" + id + "为好友");
}
}
else if (tokens[0] == "REFREQ")
{
MessageBox.Show("您的好友请求被拒绝：" + tokens[1]);
}
else if (tokens[0] == "ACCREQ")
{
MessageBox.Show("您的好友已通过\n" + tokens[1] + "已成为您的好友");
}
else if (tokens[0].ToUpper() == "OKONLINE")
{
OnlineState.Text = "在线";
this.state = CONNECTED;
}
else if (tokens[0].ToUpper() == "ONLINE")
{
if (tokens[1] != myInfo.id)
{
MessageBox.Show(tokens[1] + "上线");
}
else
{
this.state = CONNECTED;
}
}
else if (tokens[0].ToUpper() == "OFFLINE")
{
if (tokens[1] != myInfo.id)
{
MessageBox.Show(tokens[1] + "下线");
}
else
{
this.state = CONNECTED;
}
}
else if (tokens[0].ToUpper() == "FRESH")
{
FriList.Clear();
imageList.Images.Clear();
imageList_small.Images.Clear();
LoadProgram();
}
else if (tokens[0].ToUpper() == "ERROR")
{
if (tokens[1] == "ISONLINE")
{
MessageBox.Show("该账户已经登陆,此窗口会自动关闭");
this.state = CLOSED;
this.Close();
}
else if (tokens[1] == "SERVERERR")
{
MessageBox.Show("服务器连接错误，信息并未成功发送");
}
}
else
{
//如果从服务器返回的其他消息格式，则直接显示
MessageBox.Show(msg, "客户端收到其他种类的消息");
}
}
//关闭连接
tcpClient.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "与服务器的连接断开");
this.state = CLOSED;
}
}