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■直線を描画する
PictureBoxに直線を描画する例です。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
System.Diagnostics.PerformanceCounter pc = new System.Diagnostics.PerformanceCounter();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
using (Graphics gra = pictureBox1.CreateGraphics())
{
// 既存のPenを使って黒の直線
gra.DrawLine(Pens.Black, 0, 0, pictureBox1.Width, 0);
// 青色、太さ3のペンで直線
Pen pen = new Pen(Color.Blue, 3);
gra.DrawLine(pen, 0, 10, pictureBox1.Width, 10);
// ペンを破線にして直線
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
gra.DrawLine(pen, 0, 20, pictureBox1.Width, 20);
}
}
}
}
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