第十二周 C# 试验 《 2 》 .

private void Form1_Paint(object sender, PaintEventArgs e)

{

    Graphics g = e.Graphics;

    Point centerPoint = new Point(160, 80);

    int R = 60;

    GraphicsPath path = new GraphicsPath();

    path.AddEllipse(centerPoint.X - R, centerPoint.Y - R, 2 * R, 2 * R);

    PathGradientBrush brush = new PathGradientBrush(path);

    //指定路径中心点

    brush.CenterPoint = centerPoint;

    //指定路径中心点的颜色

    brush.CenterColor = Color.White;

    //Color类型的数组指定与路径上每个顶点对应的颜色

    brush.SurroundColors = new Color[] { Color.Black };

    g.FillEllipse(brush, centerPoint.X - R, centerPoint.Y - R, 2 * R, 2 * R);

}

 

 

 

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();        }        private void Form1_Paint(object sender, PaintEventArgs e)        {            Graphics g = e.Graphics;            Point centerPoint = new Point(160, 80);            int R = 60;            GraphicsPath path = new GraphicsPath();            path.AddEllipse(centerPoint.X - R, centerPoint.Y - R, 2 * R, 2 * R);            PathGradientBrush brush = new PathGradientBrush(path);            //指定路径中心点            brush.CenterPoint = centerPoint;            //指定路径中心点的颜色            brush.CenterColor = Color.White;            //Color类型的数组指定与路径上每个顶点对应的颜色            brush.SurroundColors = new Color[] { Color.Black };            g.FillEllipse(brush, centerPoint.X - R, centerPoint.Y - R, 2 * R, 2 * R);}        }    }