C#里Timer1_Tick如何调用Panel1_Paint
Panel1_Paint如下：

C# code

        private void panel1_Paint(object sender, PaintEventArgs e)        {            Graphics g = e.Graphics;            Pen pen1 = new Pen(Color.Red);            Pen pen2 = new Pen(Color.Green);            SolidBrush brush1 = new SolidBrush(Color.Red);            SolidBrush brush2 = new SolidBrush(Color.Green);            for (int i = 0; i < 3; i++)            {                if (time >= 0 && time <= 3)                {                    g.DrawEllipse(pen2, this.panel1.Width / 2 + i * 25, this.panel1.Height / 2 - 150, 20, 20);                    g.FillEllipse(brush2, this.panel1.Width / 2 + i * 25, this.panel1.Height / 2 - 150, 20, 20);                }                else                {                    g.DrawEllipse(pen2, this.panel1.Width / 2 + i * 25, this.panel1.Height / 2 - 150, 20, 20);                    g.FillEllipse(brush2, this.panel1.Width / 2 + i * 25, this.panel1.Height / 2 - 150, 20, 20);                }            }            Graphics g1 = e.Graphics;            Pen pen3 = new Pen(Color.White);            SolidBrush brush3 = new SolidBrush(Color.White);            for (int i = 0; i < 35; i++)            {                g1.DrawRectangle(pen3, 2 + i * 20, this.panel1.Height / 2-120, 10, 150);                g1.FillRectangle(brush3, 2 + i * 20, this.panel1.Height / 2-120, 10, 150);            }        }

timer1_Tick是这样写的

C# code

private void timer1_Tick(object sender, EventArgs e) 
 { 
   this.panel1_Paint(sender, e); 
 }

但是这样有问题的。。。

[解决办法]

C# code

private void timer1_Tick(object sender, EventArgs e)        {            this.panel1.Refresh();        }