winform 动态显示公告

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#region 加载公告
        private void loadAnnounce()
        {
            DataTable dt = userService.findAnnounce();//得到所有符合条件的公告
            if (pMid.Controls.Count > 0)
            {
                pMid.Controls.Clear();
            }
            if (dt!=null && dt.Rows.Count >0)
            {
                int x = 0;
                int y = 10;
                Panel pGG = new Panel();
                pGG.Location = new Point(x, y);
                int width = 0;
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    LinkLabel lb = new LinkLabel();
                    string title = dt.Rows[i]["title"].ToString();
                    lb.Font = new Font("宋体", 9);
                    Graphics graphics = CreateGraphics();
                    SizeF sizeF = graphics.MeasureString(title, new Font("宋体", 9)); //获得字符串对应的宽度（像素）
                    lb.Text = title;
                    lb.Location = new Point(x, y);
                    lb.Size = new Size(Convert.ToInt32(sizeF.Width), 35);
                    object obj = new object();
                    obj = dt.Rows[i]["GUID"].ToString();
                    lb.Links.Add(new LinkLabel.Link(0, title.Length, obj));
                    lb.LinkClicked += new LinkLabelLinkClickedEventHandler(lb_LinkClicked);
                    pGG.Controls.Add(lb);

                    x = lb.Location.X + Convert.ToInt32(sizeF.Width);
                    width += Convert.ToInt32(sizeF.Width);
                }
                pGG.Size = new Size(width, pMid.Height);
                pMid.Controls.Add(pGG);

           }
        }
        #endregion

//公告滚动
        private void timer1_Tick(object sender, EventArgs e)
        {
            if (pMid.Controls.Count > 0)
            {
                pMid.Controls[0].Left -= 2;
                if (pMid.Controls[0].Right < 0)
                {
                    pMid.Controls[0].Left = pMid.Controls[0].Width;
                }
            }
        }