private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
int h = pictureBox1.Height;
graph = e.Graphics;
pictureBox1.BackColor = Color.Black;
for (int 线 = 0; 线 < 100; 线 = 线 + 10)
{
graph.DrawLine(线条, new Point(线, 0), new Point(线, 100));//竖线需X坐标=同
graph.DrawLine(线条1, new Point(0, 线), new Point(200, 线));//横线需Y坐标=同
graph.DrawLine(线条, new Point(线 + 100, 0), new Point(线 + 100, 100));//竖线需X坐标=同
}
for (int i = 0; i < 9; i++)
{
graph.DrawLine(p, i * 10, h - shuzu[i], (i+1) *10, h-shuzu[i+1]);
}
}
private void timer1_Tick(object sender, EventArgs e)
{
int len = 10;
for (int i = 0; i < len; i++)
{
//判断数组越界
if (i < len - 1)
{
shuzu[i] = shuzu[i + 1];
}
else
{
shuzu[len - 1] = rmd.Next(0,100);
}
}
Invalidate();
}
}
------解决思路----------------------
把 timer1_Tick 中除 Invalidate(); 外的代码移到 pictureBox1_Paint 开始处。这样便于检查错误
我试了一下，没有问题的（当然我把不相关的代码都去掉了）
private int[] shuju = new int[10];
private Random rand = new Random();
public Form1()
{
InitializeComponent();
for (int i = 0; i < shuju.Length; i++) shuju[i] = rand.Next(0, 100);
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
var g = e.Graphics;
int i;
for (i = 0; i < shuju.Length-1; i++)
{
g.DrawLine(Pens.Green, new PointF(i * 10, shuju[i]), new PointF((i + 1) * 10, shuju[i + 1]));
}
for (i = 0; i < shuju.Length-1; i++) shuju[i] = shuju[i+1];
shuju[i] = rand.Next(0, 100);
}
不要是你的 timer1_Tick 没有被触发吧？