Mega Code Archive

 

Categories / C# Tutorial / 2D Graphics

 

DrawEllipse

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {     private string strColor;     public static void Main() {         Application.Run(new Form1());     }     private void Form1_Click(object sender, EventArgs e) {         switch (strColor) {             case "red":                 strColor = "yellow";                 break;             case "yellow":                 strColor = "green";                 break;             default:                 strColor = "red";                 break;         }         this.Invalidate(new Rectangle(10, 10, 50, 150));     }     private void Form1_Paint(object sender, PaintEventArgs e) {         Graphics g = e.Graphics;         g.FillRectangle(Brushes.White, this.ClientRectangle);         g.FillRectangle(Brushes.Black, 10, 10, 50, 150);         g.DrawEllipse(Pens.White, 15, 15, 40, 40);         g.DrawEllipse(Pens.White, 15, 60, 40, 40);         g.DrawEllipse(Pens.White, 15, 105, 40, 40);         switch (strColor) {             case "red":                 g.FillEllipse(Brushes.Red, 15, 15, 40, 40);                 break;             case "yellow":                 g.FillEllipse(Brushes.Yellow, 15, 60, 40, 40);                 break;             case "green":                 g.FillEllipse(Brushes.Green, 15, 105, 40, 40);                 break;             default:                 g.FillEllipse(Brushes.Red, 15, 15, 40, 40);                 break;         }     } }