Winform 关于文字移动的问题！！？？

Question

小弟现在想做一个关于label从下往上移动的窗体。基本功能已实现，但效果不理想，不理想在哪呢？在一段文字走完了以后，会出现一屏的空白。望大侠们赐教下！！！基本代码如下：
  int loc_text = 0;
 private void timer1_Tick(object sender, EventArgs e)
        {
            int FWidth = this.panel1.Width;
            int FHeight = this.panel1.Height;            Point LPos = new Point(this.label1.Location.X, this.label1.Location.Y);
            if (LPos.Y < FHeight)
            {
                if (LPos.Y < -loc_text)
                {
                    this.label1.Location = new Point(0, this.Height - 72); return;
                }                this.label1.Location = new Point(LPos.X, LPos.Y - 10);
                return;
            }
            else
            {
                this.label1.Location = new Point(0, 0);
            }
        }
 private void JCZ_SendNews_Load(object sender, EventArgs e)
        {
            this.label1.Location = new Point(0, this.Height - 72);
            label1.Text = "      紧急通知\n由于近期物价高涨，燃油价格也高涨，反正就是什么都贵了。为了体现中国加入WTO与国际接轨的精神，本店铺也将提价10%，表示对国家的物质文明建设的贡献！";            int sumChar = label1.Text.Length;
            int rowCount = (sumChar / 10) + 1;
            label1.Height = rowCount * 100;
            loc_text = rowCount * 100;
            label1.Size = new Size(1024, label1.Height);
            label1.Font = new Font("黑体", 72);
            label1.ForeColor = Color.Red;
            this.BackColor = Color.Black;            this.timer1.Enabled = true;
            this.timer1.Interval = 300;
            this.timer1.Start();        }
窗体的尺寸为：1024，768winformlabel从下往上移动timer

Answer 1

if (LPos.Y < FHeight)
=>
if (LPos.Y+label1.Height < FHeight)

Answer 2

不要用Timer。timer有段时间停顿的。
你用一个线程做。那个不会停顿的。

Answer 3

if (LPos.Y < -loc_text)判断不对，应该是
if (LPos.Y < -label1.Height)        private void timer1_Tick(object sender, EventArgs e)
        {
            int FWidth = this.panel1.Width;
            int FHeight = this.panel1.Height;            Point LPos = this.label1.Location;
            if (LPos.Y < FHeight)
            {
                if (LPos.Y < -label1.Height)
                {
                    this.label1.Location = new Point(0, this.Height - 72);
                    return;
                }                this.label1.Location = new Point(LPos.X, LPos.Y - 10);
            }
            else
            {
                this.label1.Location = new Point(0, 0);
            }
        }
        private void JCZ_SendNews_Load(object sender, EventArgs e)
        {
            this.label1.Location = new Point(0, this.Height - 72);
            label1.Text = "      紧急通知\n由于近期物价高涨，燃油价格也高涨，反正就是什么都贵了。为了体现中国加入WTO与国际接轨的精神，本店铺也将提价10%，表示对国家的物质文明建设的贡献！";            int sumChar = label1.Text.Length;
            int rowCount = (sumChar / 10) + 1;
            label1.Height = rowCount * 100;
            label1.Size = new Size(1024, label1.Height);
            label1.Font = new Font("黑体", 72);
            label1.ForeColor = Color.Red;
            //this.BackColor = Color.Black;
            this.timer1.Enabled = true;
            this.timer1.Interval = 300;
            this.timer1.Start();        }

Answer 4

 int loc_text = 0;
        Label label2 = new Label();
        bool Bo = true;
        bool Bol = true;
      
        private void timer1_Tick(object sender, EventArgs e)
        {
            int FWidth = this.panel1.Width;
            int FHeight = this.panel1.Height;            Point LPos = new Point(this.label1.Location.X, this.label1.Location.Y);
            if (LPos.Y < FHeight)
            {
                if (LPos.Y < -(loc_text / 2))
                {
                    if (Bol)
                    {                        if (Bo)
                        {
                            label2.Location = new Point(0, this.Height - 72);
                            panel1.Controls.Add(label2);
                            timer2.Enabled = true;
                            timer2.Interval = 300;
                            timer2.Start();
                            Bo = false;
                            Bol = false;
                        }
                    }
                }
                if (LPos.Y < -loc_text)
                {
                    timer1.Stop();
                }
                this.label1.Location = new Point(LPos.X, LPos.Y - 10);
                return;
            }
            else
            {
                this.label1.Location = new Point(0, 0);
            }
        }        private void timer2_Tick(object sender, EventArgs e)
        {
            int FWidth = this.panel1.Width;
            int FHeight = this.panel1.Height;            Point LPos = new Point(this.label2.Location.X, this.label2.Location.Y);
            if (LPos.Y < FHeight)
            {
                if (LPos.Y < -(loc_text / 2))
                {
                    if (!Bo)
                    {
                        timer1.Start();
                        this.label1.Location = new Point(0, this.Height - 72);
                        Bo = true;
                    }                }
                if (LPos.Y < -loc_text)
                {
                    timer2.Stop(); Bol = true;
                }                this.label2.Location = new Point(LPos.X, LPos.Y - 10);
                return;
            }
            else
            {
                this.label2.Location = new Point(0, 0);
            }
        }        private void JCZ_SendNews_Load(object sender, EventArgs e)
        {
            this.label1.Location = new Point(0, this.Height - 72);
            label1.Text = "      紧急通知\n由于近期物价高涨，燃油价格也高涨，反正就是什么都贵了。为了体现中国加入WTO与国际接轨的精神，本店铺也将提价10%，表示对国家的物质文明建设的贡献！";            int sumChar = label1.Text.Length;
            int rowCount = (sumChar / 10) + 1;
            label1.Height = rowCount * 100;
            loc_text = rowCount * 100;
            label1.Size = new Size(1024, label1.Height);
            label1.Font = new Font("黑体", 72);
            label1.ForeColor = Color.Red;            label2.Text = label1.Text;
            sumChar = label2.Text.Length;
            rowCount = (sumChar / 10) + 1;
            label2.Height = rowCount * 100;
            label2.Size = new Size(1024, label2.Height);
            label2.Font = new Font("黑体", 72);
            label2.ForeColor = Color.Red;            this.BackColor = Color.Black;            this.timer1.Enabled = true;
            this.timer1.Interval = 300;
            this.timer1.Start();        }解决了……。办法是通过，两个label,的涵接来实现……。散分，结贴！