C# – How to change the color of progressbar in C# .NET 3.5

.net-3.5cnetwinforms

I'd like to do two things on my progress bar.

  1. Change the green colour to red.
  2. Remove the blocks and make it in one color.

Any information about those two things I wonder how to accomplish will be greatfuly appreaciated!

Thanks.

Best Answer

OK, it took me a while to read all the answers and links. Here's what I got out of them:

Sample Results

The accepted answer disables visual styles, it does allow you to set the color to anything you want, but the result looks plain:

enter image description here

Using the following method, you can get something like this instead:

enter image description here

How To

First, include this if you haven't: using System.Runtime.InteropServices;

Second, you can either create this new class, or put its code into an existing static non-generic class:

public static class ModifyProgressBarColor
{
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
    static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr w, IntPtr l);
    public static void SetState(this ProgressBar pBar, int state)
    {
        SendMessage(pBar.Handle, 1040, (IntPtr)state, IntPtr.Zero);
    }
}

Now, to use it, simply call:

progressBar1.SetState(2);

Note the second parameter in SetState, 1 = normal (green); 2 = error (red); 3 = warning (yellow).

Hope it helps!

Related Topic