private string _Friendname;

        public string Friendname

        {

            get { return _Friendname; }

            set { _Friendname = value; }

        }

        private string _Mename;

        public string Mename

        {

            get { return _Mename; }

            set { _Mename = value; }

        }

        public Chat()

        {

            InitializeComponent();

        }

        //构造函数重载

        public Chat(string friendname,string mename)

            : this()

        {

            _Friendname = friendname;

            _Mename = mename;

        }

        //加载

        private void Chat_Load(object sender, EventArgs e)

        {

            //加载左上角的ico及显示文字

            UsersTableAdapter adp = new UsersTableAdapter();

            qqdata.UsersDataTable table = adp.GetDataByUsername(_Friendname);
            //将取出的Image图片转为Icon格式的

            Bitmap a = (Bitmap)imageList1.Images[table[].PhotoCode-];

            this.Icon = System.Drawing.Icon.FromHandle(a.GetHicon());

            this.Text = getmemoname(_Mename) + "正在和" + getmemoname(_Friendname) + "聊天";

        }

        //根据用户名获取昵称的方法

        private string getmemoname(string name)

        {

            UsersTableAdapter adp1 = new UsersTableAdapter();

            qqdata.UsersDataTable tab = new qqdata.UsersDataTable();

            tab = adp1.GetDataByUsername(name);

            return tab[].Memo;

        }

        //按下发送键

        private void btnsender_Click(object sender, EventArgs e)

        {

            string nr = senderword.Text;

            DateTime sj = DateTime.Now;

            //将自己发送的聊天内容，时间传到数据库

            new ChatTableAdapter().InsertChat(_Mename,_Friendname,nr,sj,);

            senderword.Text = "";

            //将自己发送的内容直接显示出来，添加显示（非绑定）

            qqdata.UsersDataTable tab = new UsersTableAdapter().GetDataByUsername(_Mename);

            //造主项

            ListViewItem item = new ListViewItem();

            //设置主项信息

            item.Text = getmemoname(_Mename) + sj.ToString() + "说:" + nr;

            item.ImageIndex = tab[].PhotoCode - ;

            chatwindow.Items.Add(item);

        }

        //时间控件循环查

        private void timer1_Tick(object sender, EventArgs e)

        {

            //数据库内查找此朋友发来的未读消息，添加显示出来，显示完设置已读

            qqdata.ChatDataTable tab2 = new ChatTableAdapter().GetDataBySenderAndReceiver(_Friendname,_Mename,);

            foreach (qqdata.ChatRow row in tab2.Rows)

            {

                qqdata.UsersDataTable tab = new UsersTableAdapter().GetDataByUsername(row.Sender);

                //造主项

                ListViewItem item = new ListViewItem();

                //设置主项信息

                item.Text = getmemoname(row.Sender) + row.Time.ToString() + "说:" + row.Content;

                item.ImageIndex = tab[].PhotoCode - ;

                //标记为已读

                if (row.Sender == _Friendname)

                {

                    new ChatTableAdapter().UpdateState(, row.Ids);

                }

                chatwindow.Items.Add(item);

            }

        }

        //窗体关闭的时候给N赋值为0，控制自定义控件头像在聊天关闭后来消息提醒

        private void Chat_FormClosed(object sender, FormClosedEventArgs e)

        {

            Friendsmode.N = ;

        }