C#

{
   InitializeComponent();
   this.Load += new EventHandler(Form1_Load);
}

private void Form1_Load(object sender, EventArgs e)
{
    Button[] b = new Button[3];
    for (int i = 0; i < 3; i++)
    {
       b[i] = new Button();
       b[i].Name = i.ToString();
       b[i].Click +=new EventHandler(Form1_Click);
       b[i].Location = new Point(i * 10, i * 10);
                
    }
    this.Controls.AddRange(b);
}

private void Form1_Click(object sender, EventArgs e)
{
   Button b = (Button)sender;
   Console.WriteLine(b.Name);
}

max00slo wrote:

The user would give out the number of buttons.

void CreateButtons(int num)
{
    Button[] button = new Button[num];
    for (int i = 0; i < num; i++)
    {
        // Anything that cocoonwls said.
        button[i].Click += new EventHandler(Buttons_Click);
        this.Controls.Add(button[i]);
    }
}

max00slo wrote:

Every button should have its own working onclick code

void Buttons_Click (object sender, EventArgs e)
{
    Button b = sender as Button;
    switch (b.Name)
    {
        // Code for events
    }
}

if(e.KeyChar==37)<br />
                txtStatus.Text = "You've pressed the left arrow key.";<br />
            if(e.KeyChar==38)<br />
                txtStatus.Text = "You've pressed the up arrow key.";<br />
            if(e.KeyChar==39)<br />
                txtStatus.Text = "You've pressed the right arrow key.";

cocoonwls wrote:

i just can't detect the arrows key

if (e.KeyCode == Keys.Right)
{
    ...
}

Syntax:

C#:
 protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
    //handle your keys here
}

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

        Image.GetThumbnailImageAbort myCallback = new Image.GetThumbnailImageAbort(ThumbnailCallback);
        Image myThumbnail = this.imageList1.Images[0].GetThumbnailImage(this.pictureBox1.Size.Width - 5, this.pictureBox1.Size.Height - 5, myCallback, IntPtr.Zero);
        this.pictureBox1.Image = myThumbnail;
        this.pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
    }

    private bool ThumbnailCallback()
    {
        return true;
    }
}