winform时钟c#代码

代码如下：

 using System;
  using System.Collections.Generic;
  using System.ComponentModel;
  using System.Data;
  using System.Drawing;

  using System.Text;
  using System.Windows.Forms;

  namespace Simpclock
  {
      public partial class Form1 : Form
      {
          DateTime date = DateTime.Now;

          public Form1()
          {
              InitializeComponent();

          }

          private void Form1_Load(object sender, EventArgs e)
          {
              date = DateTime.Now;

          }

          private void OnPaint(object sender, PaintEventArgs e)
          {
              Font font = new Font("Times New Roman", );
              Graphics g = CreateGraphics();
              g.DrawString(date.ToString(), font, Brushes.Firebrick, , );
              g.DrawString(date.DayOfWeek.ToString(), font, Brushes.Red, , );
              DrawDial(g);
              DrawSecondPointer(g);
              DrawMinutePointer(g);
              DrawHourPointer(g);

          }
          //刷新时间
          private void OnTime(object sender, EventArgs e)
          {
              date = DateTime.Now;
              Invalidate();
          }
          //画钟表
          //表盘部分
          Point GetPosition(int s, Point center, double radius)//定位
          {
              Point p = new Point();
              double x = center.X + radius * Math.Sin(Math.PI /  * s);
              double y = center.Y - radius * Math.Cos(Math.PI /  * s);
              p.X = (int)x;
              p.Y = (int)y;
              return p;
          }

          void DrawDial(Graphics g)//外圆及刻度
          {
              int n;
              Rectangle rect = new Rectangle(, , , );
              //g.FillEllipse(Brushes.White, 40, 10, 300, 300);
              g.DrawEllipse(new Pen(Color.Black, ), rect);
              Point p1, p2;
              Point center = new Point(, );
              for (n = ; n < ; n++)
              {
                  p1 = GetPosition(n, center, );
                  if (n %  == )
                  {
                      p2 = GetPosition(n, center, );
                      g.DrawLine(new Pen(Color.Black, ), p1, p2);
                  }
                  else
                  {
                      p2 = GetPosition(n, center, );
                      g.DrawLine(Pens.Red, p1, p2);
                  }
              }
              Font font = new Font("Times New Roman", );
              n = ;
              p1 = GetPosition(n, center, );
              g.DrawString("XII", font, Brushes.Black, p1.X - , p1.Y);
              n += ;
              p1 = GetPosition(n, center, );
              g.DrawString("III", font, Brushes.Black, p1.X - , p1.Y - );
              n += ;
              p1 = GetPosition(n, center, );
              g.DrawString("VI", font, Brushes.Black, p1.X - , p1.Y - );
              n += ;
              p1 = GetPosition(n, center, );
              g.DrawString("IX", font, Brushes.Black, p1.X, p1.Y - );
          }
          //秒针部分
          void DrawSecondPointer(Graphics g)
          {
              Point center = new Point(, );
              Point p;
              p = GetPosition(date.Second, center, );
              g.DrawLine(Pens.Red, center, p);
              g.FillEllipse(Brushes.Red, new Rectangle(p.X - , p.Y - , , ));

          }
          //分针部分
          void DrawMinutePointer(Graphics g)
          {
              Point center = new Point(, );
              Point p;
              p = GetPosition(date.Minute, center, );
              g.DrawLine(Pens.Blue, center, p);
              //g.FillEllipse(Brushes.Blue, new Rectangle(p.X - 4, p.Y - 4, 8, 8));
          }
          //时针部分
          Point GetHourPosition(Point center, double radius)
          {
              Point p = new Point();
              int h = date.Hour;
              int m = date.Minute;
              double t = Math.PI /  * h + Math.PI /  * m;
              double x = center.X + radius * Math.Sin(t);
              double y = center.Y - radius * Math.Cos(t);
              p.X = (int)x;
              p.Y = (int)y;
              return p;
          }
          void DrawHourPointer(Graphics g)
          {
              Point center = new Point(, );
              Point p = GetHourPosition(center, );
              g.DrawLine(new Pen(Brushes.Black, ), center, p);
              //去指针圆尖 http://www.cnblogs.com/sosoft/
              // g.FillEllipse(Brushes.Black,
              //              new Rectangle(p.X - 6, p.Y - 6, 12, 12));
              g.FillEllipse(Brushes.YellowGreen,
              new Rectangle(center.X - , center.Y - , , ));

          }

      }
 }