C# Windows Forms TrackBar Examples

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

Example 1: TrackBar

This example will comprise the following files:

• ProgressBar.cs
• TrackBar.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). ProgressBar.cs

Create a file named ProgressBar.cs

Here is the full code

using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Gammasoft {
  //
  // Summary:
  //     Represents a Windows progress bar control.
  [ClassInterface(ClassInterfaceType.AutoDispatch)]
  [ComVisible(true)]
  [DefaultBindingProperty("Value")]
  [DefaultProperty("Value")]
  public class ProgressBar : System.Windows.Forms.ProgressBar {
    //
    // Summary:
    //     Gets or sets a value indicating the horizontal or vertical orientation of the progress bar.
    //
    // Returns:
    //     One of the System.Windows.Forms.Orientation values.
    //
    // Exceptions:
    //   T:System.ComponentModel.InvalidEnumArgumentException:
    //     The assigned value is not one of the System.Windows.Forms.Orientation values.
    [DefaultValue(Orientation.Horizontal)]
    [Localizable(true)]
    public Orientation Orientation {
      get { return orientation; }
      set {
        if (value != Orientation.Horizontal && value != Orientation.Vertical) throw new InvalidEnumArgumentException(string.Format("The value of argument 'value' ({0}) is invalid for Enum type 'Orientation'.", value));
        if (orientation != value) {
          orientation = value;
          if (IsHandleCreated) RecreateHandle();
        }
      }
    }

    //
    // Summary:
    //     Overrides System.Windows.Forms.Control.CreateParams.
    //
    // Returns:
    //     Information needed when you create a control.
    protected override CreateParams CreateParams {
      get {
        CreateParams createParams = base.CreateParams;
        if (Orientation == Orientation.Vertical) createParams.Style |= PBS_VERTICAL;
        return createParams;
      }
    }

    private Orientation orientation = Orientation.Horizontal;
    private const int PBS_VERTICAL = 4;
  }
}

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). TrackBar.cs

Create a file named TrackBar.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() {
      ClientSize = new System.Drawing.Size(300, 300);
      Text = "TrackBar Example";

      trackBar.Parent = this;
      trackBar.Location = new System.Drawing.Point(50, 50);
      trackBar.Maximum = 200;
      trackBar.Orientation = Orientation.Vertical;
      trackBar.Size = new System.Drawing.Size(45, 200);
      trackBar.TickStyle = TickStyle.None;
      trackBar.ValueChanged += delegate(object sender, EventArgs e) {
        progressBar.Value = trackBar.Value;
        label.Text = string.Format("{0}", trackBar.Value);
      };
      trackBar.Value = 100;

      progressBar.Parent = this;
      progressBar.Location = new System.Drawing.Point(100, 50);
      progressBar.Maximum = 200;
      progressBar.Orientation = Orientation.Vertical;
      progressBar.Size = new System.Drawing.Size(23, 200);
      progressBar.Style = ProgressBarStyle.Continuous;

      label.Parent = this;
      label.Location = new System.Drawing.Point(150, 50);
    }

    private TrackBar trackBar = new TrackBar();
    private Gammasoft.ProgressBar progressBar = new Gammasoft.ProgressBar();
    private Label label = new Label();
  }
}

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