System.Drawing Color.Transparent example not working

Question

In the Microsoft documentation for the System.Drawing.Color.Transparent property (https://learn.microsoft.com/en-us/dotnet/api/system.drawing.color.transparent?view=net-8.0), the given example does not seem to work. Here is my coded implementation of that example:

namespace ColorTransparent;
public partial class FormCT : Form
{
    public FormCT ()
    {
        InitializeComponent ();
        UseTransparentProperty ();
    }
    private void UseTransparentProperty ()
    {
        // Set up the PictureBox to display the entire image, and
        // to cover the entire client area.
        pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
        pictureBox1.Dock = DockStyle.Fill;
        try
        {
            // Set the Image property of the PictureBox to an image retrieved
            // from the file system.
            pictureBox1.Image =
                Image.FromFile (@"C:\Users\Admin\OneDrive\Pictures\Family\Aunt Lee Alone\Aunt Lee.png");
            // Set the Parent property of Button1 and Button2 to the 
            // PictureBox.
            button1.Parent = pictureBox1;
            button2.Parent = pictureBox1;
            // Set the Color property of both buttons to transparent. 
            // With this setting the buttons assume the color of their
            // parent.
            button1.BackColor = Color.Transparent;
            button2.BackColor = Color.Transparent;
        }
        catch (FileNotFoundException)
        {
            MessageBox.Show ("There was an error." +
                "Make sure the image file path is valid.");
        }
    } // method UseTransparentProperty

Both buttons remain with a white background instead of the PictureBox image that covers the Form. Shown below is a snapshot of the displayed form. Any ideas for fixing this problem? Thanks.

Answer 1

Hi @Nicholas Piazza , Welcome to Microsoft Q&A,

Please do not upload images with people in them, as such images contain files containing private information.

There is indeed a problem with the tutorial you mentioned. In WinForms, the button control does not support transparent background colors.

Best Regards, Jiale

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