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[C#] ProgressBar control with text / percentage! - Printable Version

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+---- Thread: [C#] ProgressBar control with text / percentage! (/showthread.php?tid=4510732)

ProgressBar control with text / percentage! - Delirium™ - Oct 27, 2014

Hello.

I was in need of a progress bar with the ability to display the percentage on it and using a label onto a default progress bar sounded like a dumb method therefore, I wrote my own custom progress bar control with the ability to display text or percentage built-in.

Here's the source:

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

public enum ProgressBarDisplayStyle
{
    Percentage,
    Text
}

class TextProgressBar : ProgressBar
{
    [DllImport("uxtheme.dll")]
    private static extern int SetWindowTheme(IntPtr hWnd, string appname, string idlist);

    private ProgressBarDisplayStyle _DisplayStyle = ProgressBarDisplayStyle.Text;

    [Browsable(true)]
    [Category("ProgressBar Style")]
    public ProgressBarDisplayStyle DisplayStyle
    {
        get { return _DisplayStyle; }
        set
        {
            _DisplayStyle = value;
            Invalidate();
        }

    }

    private string _Text = null;

    [Browsable(true)]
    [Category("ProgressBar Style")]
    public string Text
    {
        get { return _Text; }
        set { _Text = value; Invalidate(); }
    }

    protected override void OnHandleCreated(EventArgs e)
    {
        SetWindowTheme(Handle, "", "");
        base.OnHandleCreated(e);
    }

    public TextProgressBar()
    {
        SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
        Text = Name;
    }

    protected override void OnPaint(PaintEventArgs e)
    {
        Rectangle R = ClientRectangle;
        Graphics G = e.Graphics;

        ProgressBarRenderer.DrawHorizontalBar(G, R);

        if (Value > 0)
        {
            Rectangle R2 = new Rectangle(R.X, R.Y, (int)Math.Round(((float)Value / Maximum) * R.Width), R.Height);
            ProgressBarRenderer.DrawHorizontalChunks(G, R2);
        }

        string ProgressText = (DisplayStyle == ProgressBarDisplayStyle.Text) ? Text : Value + "%";

        Font F = new Font("Segoe UI", 10);
        SizeF TextSize = G.MeasureString(ProgressText, F);
        Point Center = new Point(Convert.ToInt32((Width / 2) - TextSize.Width / 2), Convert.ToInt32((Height / 2) - TextSize.Height / 2));

        G.DrawString(ProgressText, F, Brushes.Black, Center);
        F.Dispose();
    }
}

Nothing significant at all but could be useful to a couple of people. Enjoy.

* - Hiiro - Oct 28, 2014

What is uxtheme.dll?
Should I already have this library on my computer?

EDIT: Found it in System32, Thanks :P

* - Delirium™ - Oct 28, 2014

(Oct 28, 2014 05:59 PM)Austrix Wrote:  What is uxtheme.dll?
Should I already have this library on my computer?

EDIT: Found it in System32, Thanks :P

It's part of the Windows OS which handles painting and stuff.

The code which utilizes the Uxtheme.dll prevents the progress bar from flickering on the designer and the form.

* - WZDY - Oct 29, 2014

A couple of days ago I made a progressbar with % and it was like a few lines of code.
How come your be so much? Anyways, thanks for the share but you could've made this alot easier.

* - Hiiro - Oct 29, 2014

(Oct 29, 2014 12:45 PM)The Flash ϟ Wrote:  A couple of days ago I made a progressbar with % and it was like a few lines of code.
How come your be so much? Anyways, thanks for the share but you could've made this alot easier.
It just looks like a lot because he's calling OnHandleCreated and centering his text, etc.

* - WZDY - Oct 29, 2014

He could just do it in the Properties of the textbox?

* - Only3 - Oct 29, 2014

(Oct 29, 2014 01:12 PM)The Flash ϟ Wrote:  He could just do it in the Properties of the textbox?

😊 what textbox

want short code

Code
class TextProgressBar : ProgressBar
{

    public TextProgressBar()
    {
        SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer, true);
    }

    protected override void OnPaint(PaintEventArgs e)
    {
        Graphics G = e.Graphics;
        ProgressBarRenderer.DrawHorizontalBar(G, ClientRectangle);
        if (Value > 0) {
            ProgressBarRenderer.DrawHorizontalChunks(G, new Rectangle(ClientRectangle.X, ClientRectangle.Y, Convert.ToInt32(Math.Round((Convert.ToSingle(Value) / Maximum) * ClientRectangle.Width)), ClientRectangle.Height));
      }
        SizeF TextSize = G.MeasureString(Value, new Font("Segoe UI", 10));
        G.DrawString(Value, new Font("Segoe UI", 10), Brushes.Black, new Point((Width / 2) - (TextSize.Width / 2), (Height / 2) - (TextSize.Height / 2)));
    }
}


* - Delirium™ - Nov 2, 2014

(Oct 29, 2014 01:12 PM)The Flash ϟ Wrote:  He could just do it in the Properties of the textbox?

I am not using any textbox. I am drawing and centering the text manually. The code looks long probably because of the newlines I'm using to make the code cleaner and more beautiful. Or maybe because I have also implemented the ability to add custom text instead of percentage which takes up a few more lines.