In my previous articles I have shown you how to draw a pixel in picture Box. In that method we have drawn pixel directly in control of picture Box so it was slow method. Here I am presenting the fastest method to draw a pixel. For this technique we first draw a pixel or bitmap in memory then only we load it in out picture Box.
Now lets start a project
1. Create a windows form application in c sharp and give project name fastPixelPlot or your choice.
2. Set the the form properties WindowState to maximized from properties window
3.Add pictureBox on a form from toolbox
4.Set pictureBox properties Dock to fill from properties window
I assume your form name is Form1 and pictureBox name is pictureBox1
Download complete application from GitHub.
Open the Form1.cs file add a code which is shown as below:
Form1.cs
Program.cs
Now lets start a project
1. Create a windows form application in c sharp and give project name fastPixelPlot or your choice.
2. Set the the form properties WindowState to maximized from properties window
3.Add pictureBox on a form from toolbox
4.Set pictureBox properties Dock to fill from properties window
I assume your form name is Form1 and pictureBox name is pictureBox1
Download complete application from GitHub.
Open the Form1.cs file add a code which is shown as below:
Form1.cs
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 fastPixelPlot
{
public partial class Form1 : Form
{
private Bitmap m_Canvas;
public Form1()
{
InitializeComponent();
}
// Call this somewhere
public void DrawSquare()
{
m_Canvas = new Bitmap(700, 700); // Doesn't have to be initialized here
for (int x = 100; x < 200; x++)
{
for (int y = 100; y < 200; y++)
{
m_Canvas.SetPixel(x, y, Color.Blue);
}
}
SetCanvasAsImage();
}
public void SetCanvasAsImage()
{
pictureBox1.Image = m_Canvas;
}
protected override void OnPaint(PaintEventArgs e)
{
DrawSquare();
}
}
}
Form1.Designer.cs
namespace fastPixelPlot
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed;
/// otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.pictureBox1 = new System.Windows.Forms.PictureBox();
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
this.pictureBox1.Location = new System.Drawing.Point(0, 0);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(820, 483);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
//this.pictureBox1.Click += new System.EventHandler(this.pictureBox1_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(820, 483);
this.Controls.Add(this.pictureBox1);
this.Name = "Form1";
this.Text = "Form1";
this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.PictureBox pictureBox1;
}
}
Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
namespace fastPixelPlot
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
}
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