A simple picture viewer written in C# that allows you to view jpg, bmp, gif and animated gif image files. Uses a file dialog to load files, and keeps track of pictures already viewed with a list box.
View Image Files
// view jpeg, bitmap and gif (also animated) images
// this is a Windows GUI program with Buttons, ListBox, PictureBox,
// and an OpenFileDialog
// compiled with C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
using System;
using System.Drawing; // image
//using System.Collections;
using System.Windows.Forms; // GUI stuff
using System.IO; // Path.GetFileName()
namespace PicView1
{
// summary description for Form1.
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.Button OpenFileButton;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
private System.Windows.Forms.PictureBox pictureBox1;
private System.Windows.Forms.Button QuitButton;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
}
// a must, clean up any resources being used
protected override void Dispose( bool disposing )
{
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}
// these are the GUI components used
private void InitializeComponent()
{
this.QuitButton = new System.Windows.Forms.Button();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.OpenFileButton = new System.Windows.Forms.Button();
this.listBox1 = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// QuitButton
//
this.QuitButton.Location = new System.Drawing.Point(440, 344);
this.QuitButton.Name = "QuitButton";
this.QuitButton.Size = new System.Drawing.Size(144, 23);
this.QuitButton.TabIndex = 1;
this.QuitButton.Text = "Quit";
this.QuitButton.Click += new System.EventHandler(this.QuitButton_Click);
//
// pictureBox1
//
this.pictureBox1.Location = new System.Drawing.Point(8, 8);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(424, 360);
this.pictureBox1.TabIndex = 2;
this.pictureBox1.TabStop = false;
//
// openFileDialog1
//
this.openFileDialog1.Filter = "jpeg|*.jpg|Bitmap|*.bmp|gif|*.gif";
this.openFileDialog1.Title = "Open Image File";
//
// OpenFileButton
//
this.OpenFileButton.Location = new System.Drawing.Point(440, 8);
this.OpenFileButton.Name = "OpenFileButton";
this.OpenFileButton.Size = new System.Drawing.Size(144, 23);
this.OpenFileButton.TabIndex = 0;
this.OpenFileButton.Text = "Open File";
this.OpenFileButton.Click += new System.EventHandler(this.OpenFileButton_Click);
//
// listBox1
//
this.listBox1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(224)), ((System.Byte)(192)));
this.listBox1.ItemHeight = 16;
this.listBox1.Location = new System.Drawing.Point(440, 48);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(144, 276);
this.listBox1.TabIndex = 3;
this.listBox1.SelectedIndexChanged += new System.EventHandler(this.ListBox1SelectedIndexChanged);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
this.ClientSize = new System.Drawing.Size(592, 376);
this.Controls.Add(this.listBox1);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.QuitButton);
this.Controls.Add(this.OpenFileButton);
this.Name = "Form1";
this.Text = "Picture Viewer";
this.ResumeLayout(false);
}
static void Main()
{
Application.Run(new Form1());
}
private void OpenFileButton_Click(object sender, System.EventArgs e)
{
string fname;
// show the openFile dialog box
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
fname = openFileDialog1.FileName;
pictureBox1.Image = Image.FromFile(fname);
this.Text = String.Concat("Viewer (" + fname + ")");
listBox1.Items.Add(Path.GetFileName(fname));
}
}
private void QuitButton_Click(object sender, System.EventArgs e)
{
this.Close();
}
// select past filename from the ListBox items
void ListBox1SelectedIndexChanged(object sender, System.EventArgs e)
{
string fname = listBox1.SelectedItems[0].ToString();
this.Text = fname;
pictureBox1.Image = Image.FromFile(fname);
}
}
}
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