It shows how to fill triangle or how to use brush on form using C#.NET
Keywords: C#.net, CSharp.NET, triangle, drawing, graphics, fill, brush.
First import a namespace
using System.Drawing;
Place the code in the paint event for the form.
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;
namespace testc
{
public partial class Form1 : Form
{
Graphics gr_graphics = default(Graphics);
//need a pen for drawing and make it black
Pen pen_draw = new Pen(Color.Black);
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
gr_graphics = e.Graphics;
//Draw a triangle on the form.
//first have to define an array of points.
Point[] pnt = new Point[3];
pnt[0].X = 150;
pnt[0].Y = 150;
pnt[1].X = 150;
pnt[1].Y = 200;
pnt[2].X = 50;
pnt[2].Y = 120;
gr_graphics.DrawPolygon(pen_draw, pnt);
//Do a filled triangle
//First create a brush
Brush brush = default(Brush);
brush = new SolidBrush(Color.Blue);
//Now relocate the points for the triangle.
pnt[0].X += 100;
pnt[1].X += 100;
pnt[2].X += 100;
gr_graphics.FillPolygon(brush, pnt);
}
}
}
