private void Form1_Load(object sender, EventArgs e)
{
Height = 500;
Width = 500;
MyPanel myPanel = new MyPanel();
myPanel.BackColor = Color.White;
myPanel.BorderStyle = BorderStyle.FixedSingle;
myPanel.Height = Height - 50;
myPanel.Width = 200;
myPanel.Top = 5;
myPanel.Left = 5;
Controls.Add(myPanel);
var icon1 = Image.FromFile(@"path/to/file"); //Load the image FIRST
MyPanel.Tile tile = new MyPanel.Tile(icon1); //Pass it into the constructor
tile.BackColor = Color.PowderBlue;
myPanel.AddTile(tile);
var icon2 = Image.FromFile(@"path/to/file"); //Again, image first
MyPanel.Tile tile2 = new MyPanel.Tile(icon2); //Then construct
tile2.BackColor = Color.PeachPuff;
myPanel.AddTile(tile2);
}