Csharp/CSharp Tutorial/2D/Line

Draw two lines with one pen

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class PenWidthColor : System.Windows.Forms.Form
{
  public PenWidthColor()
  {
    this.BackColor = System.Drawing.Color.White;
    this.ClientSize = new System.Drawing.Size(400, 400);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.PenWidthColor_Paint);
  }

  static void Main() 
  {
    Application.Run(new PenWidthColor());
  }
  private void PenWidthColor_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    
    Pen p = new Pen(Color.Black, 10);
    g.DrawLine(p, 25, 25, 375, 375);
    g.DrawLine(p, 25, 375, 375, 25);
  }
}

Use Pens to draw Lines

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class DrawLineDemo : System.Windows.Forms.Form
{
  public DrawLineDemo()
  {
    this.BackColor = System.Drawing.Color.White;
    this.ClientSize = new System.Drawing.Size(400, 400);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.DrawLineDemo_Paint);
  }
  static void Main() 
  {
    Application.Run(new DrawLineDemo());
  }
  private void DrawLineDemo_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    Pen p = new Pen(Color.Black, 10);
    g.DrawLine(p, 25, 25, 375, 375);
  }
}