Dynamic click event on PictureBox

Question

I am getting a list of pictures from a directory and storing the filenames in a List. I then loop through each of these and create a PictureBox<

Answer 1

sender is the PictureBox that was clicked:

private void PictureClick(object sender, EventArgs e) {
    PictureBox oPictureBox = (PictureBox)sender;
    // add border, do whatever else you want.
}