C# Windows Forms Components Examples

Let us look at a simple C# Windows Forms Components example.

Example 1: Components

This example will comprise the following files:

• ImageList.cs
• TimerForm.cs

Step 1: Create Project

1. The first step is to create a C# Project.
2. Go to FILE-->New-->Project to create a new project.

Step 2: Write Code

Write Code as follows:

*(a). ImageList.cs

Create a file named ImageList.cs

Here is the full code

using System;
using System.Drawing;
using System.Windows.Forms;

namespace Examples {
  class Form1 : Form {
    [STAThread]
    public static void Main() {
      Application.EnableVisualStyles();
      Application.Run(new Form1());
    }

    public Form1() {
      Text = "ImageList Example";
      ClientSize = new System.Drawing.Size(300, 250);
      Controls.AddRange(new Control[] { picture, buttonPrevious, buttonNext});

      pictures.ImageSize = new System.Drawing.Size(128, 128);
      pictures.ColorDepth = ColorDepth.Depth32Bit;

      picture.BackColor = SystemColors.Window;
      picture.BorderStyle = BorderStyle.Fixed3D;
      picture.Bounds = new Rectangle(75, 25, 150, 150);
      picture.SizeMode = PictureBoxSizeMode.CenterImage;
      picture.Click += delegate {
        LoadImages();
      };

      buttonPrevious.Text = "&<";
      buttonPrevious.Location = new Point(75, 200);
      buttonPrevious.Enabled = false;
      buttonPrevious.Click += delegate {
        if (currentImageIndex > 0) picture.Image = pictures.Images[--currentImageIndex];
        buttonPrevious.Enabled = currentImageIndex > 0;
        buttonNext.Enabled = currentImageIndex < pictures.Images.Count - 1;
      };

      buttonNext.Text = "&>";
      buttonNext.Location = new Point(150, 200);
      buttonNext.Enabled = false;
      buttonNext.Click += delegate {
        if (currentImageIndex < pictures.Images.Count) picture.Image = pictures.Images[++currentImageIndex];
        buttonPrevious.Enabled = currentImageIndex > 0;
        buttonNext.Enabled = currentImageIndex < pictures.Images.Count - 1;
      };

      Show();
      LoadImages();
    }

    private void LoadImages() {
      OpenFileDialog ofd = new OpenFileDialog();
      ofd.Multiselect = true;
      ofd.Filter = "All Image Files|*.bmp;*.gif;*.jpg;*.jpeg;*.png;*.tif;*.tiff|Bitmap Files|*.bmp|Gif Files|*.gif|Jpeg Files|*.jpg;*.jpeg|Png Files|*.png|Tiff Files|*.tif;*.tiff";
      if (ofd.ShowDialog() == DialogResult.OK) {
        pictures.Images.Clear();
        foreach (var file in ofd.FileNames)
          pictures.Images.Add(Image.FromFile(file));
        currentImageIndex = 0;
        picture.Image = pictures.Images[currentImageIndex];
        buttonPrevious.Enabled = currentImageIndex > 0;
        buttonNext.Enabled = currentImageIndex < pictures.Images.Count - 1;
      }
    }

    private int currentImageIndex = 0;
    private ImageList pictures = new ImageList();
    private PictureBox picture = new PictureBox();
    private Button buttonPrevious = new Button();
    private Button buttonNext = new Button();
  }
}

Run

Simply copy the source code into your C# Project,Build and Run. Alternatively download the code using the links provided below, then open the .csproj project, build and run.

Reference

Download the code using the below links:

Number	Link
1.	Download Example
2.	Follow code author

*(a). TimerForm.cs

Create a file named TimerForm.cs

Here is the full code

using System;
using System.Windows.Forms;

namespace Examples {
  class Form1 : Form {
    // The main entry point for the application.
    public static void Main() {
      Application.EnableVisualStyles();
      Application.Run(new Form1());
    }

    public Form1() {
      Text = "Timer Example";
      StartPosition = FormStartPosition.Manual;
      Location = new System.Drawing.Point(400, 300);
      ClientSize = new System.Drawing.Size(230, 130);

      label.Parent = this;
      label.Text = string.Format("{0:N1}", (double)(counter) / 10);
      label.Location = new System.Drawing.Point(10, 10);
      label.Size = new System.Drawing.Size(210, 70);
      //label.AutoSize = true;
      label.Font = new System.Drawing.Font("Arial", 48, System.Drawing.FontStyle.Italic);
      label.ForeColor = System.Drawing.Color.DodgerBlue;

      timer.Interval = 100;
      timer.Tick += delegate(object sender, EventArgs e) {
        label.Text = string.Format("{0:N1}", (double)(++counter) / 10);
      };

      button.Parent = this;
      button.Text = "Start";
      button.Location = new System.Drawing.Point(10, 90);

      button.Click += delegate(object sender, EventArgs e) {
        timer.Enabled = !timer.Enabled;
        button.Text = timer.Enabled ? "Stop" : "Start";
      };
    }

    private Label label = new Label();
    private Button button = new Button();
    private Timer timer = new Timer();
    private int counter = 0;
  }
}

Run

Simply copy the source code into your C# Project,Build and Run. Alternatively download the code using the links provided below, then open the .csproj project, build and run.

Reference

Download the code using the below links:

Number	Link
1.	Download Example
2.	Follow code author