下面是我写的一个时钟     每次在运行的时候   时针和分针存在角度都是相同的 而且时针也像分针一样   秒针走一圈时针走 6°;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        int w, h,s=(360/60);
        
        private void Form1_Load(object sender, EventArgs e)
        {
           
        }        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            
          
            w = pictureBox1.Width;
            h = pictureBox1.Height;            pictureBox1.Parent = this;
            //时分秒三种针
            Pen penm = new Pen(Color.Blue,2);
            Pen penh = new Pen(Color.DarkGoldenrod,3);
            Pen pen = new Pen(Color.Purple, 1);
            Pen penK = new Pen(Color.Purple,4);
            Graphics g = e.Graphics;
           
            Brush brush=new SolidBrush(Color.Black);
            Font font=new System.Drawing.Font("Arail",10,FontStyle.Bold);
            //三种针分别旋转的角度
            float mAngle = s * DateTime.Now.Minute + (float)DateTime.Now.Second / 10;
            float hAngle = 30 * DateTime.Now.Hour ;           
            g.SmoothingMode = SmoothingMode.AntiAlias;
            GraphicsState state = g.Save(); //保存坐标变换后的状态
            g.TranslateTransform(h / 2, h / 2);            //话整点
            for (int i = 0; i < 12; i++)
            {
                g.RotateTransform(30);
                g.DrawLine(penK, new Point(0, -h/2), new Point(0, -h/2+12));                g.DrawString((i + 1).ToString(), font, brush, new Point(-10, -h / 2 + 10));
                
            }            //画出小的刻标
            Pen penM=new Pen(Color.Purple,1);
            for (int i = 0; i < 60;i++ )
            {
                g.RotateTransform(6);
                g.DrawLine(penM,new Point(0,-h/2),new Point(0,-h/2+10));
              }
            g.DrawEllipse(pen, -h / 2, -h / 2, h, h);
            g.RotateTransform((DateTime.Now.Second * s));
            g.DrawLine(pen, new Point(0, 15), new Point(0,-h/2+15));
           
            g.Restore(state);
            //分针旋转的角度
            g.TranslateTransform(h / 2, h / 2); 
            g.RotateTransform(mAngle);
            g.DrawLine(penm,new Point(0,15),new Point(0,-h/2+20));           //时针旋转的角度
            g.RotateTransform(hAngle);
            g.DrawLine(penh,new Point(0,15),new Point(0,-h/2+25));
            
            
           //Rectangle tec = new Rectangle(new Point(0,0),new System.Drawing.Size);
            //Font  font=new Font("隶书",5,FontStyle.Italic|FontStyle.Underline);
           
            
        }              private void timer1_Tick(object sender, EventArgs e)
        {
           
            pictureBox1.Invalidate();
        }
    }
}