Tim Van Wassenhove

Suppose you add a couple of buttons to a panel as shown below. What do you think the message in the MessageBoxes will be?

public partial class Form1 : Form {
 public Form1() {
  InitializeComponent();

  for (int i = 0; i < 10; ++i) {
   Button button = new Button();
   button.Text = String.Format("{0:00}", i);
   this.flowLayoutPanel1.Controls.Add( button );

   button.Click += new EventHandler(delegate(Object sender, EventArgs e) {
    MessageBox.Show(String.Format("You clicked button {0:00}", i));
   });
  }
 }
}

In case you’re wondering why they all have the message “You clicked button 10″ i suggest you read the following articles:

• Part 1
• Part 2
• Part 3