How do you access the name of the image in a picturebox in Visual Studio using C#

Question

I have a program which has 16 grid tiles using picturebox but only uses 5 images, the rest of the tiles are just a black image.

I would like to be able to tell which

Answer 1

You can do something like this using the Tag property like @Adriano suggested:

public Form1()
{
    InitializeComponent();
    pictureBox1.Click += pictureBox_Click;
    pictureBox2.Click += pictureBox_Click;
    pictureBox3.Click += pictureBox_Click;
    // ...
    pictureBox1.Tag = "picture1.png";
    pictureBox2.Tag = "picture2.png";
    pictureBox3.Tag = "picture3.png";
}

void pictureBox_Click(object sender, EventArgs e)
{
    PictureBox pb = sender as PictureBox;

    if (pb.BackColor != Color.Black)
        Debug.WriteLine(pb.Tag.ToString());
    else
        Debug.WriteLine("Black image");

}