namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
int c, r;
public Form1()
{
InitializeComponent();
c = 0;
}
private void button1_Click(object sender, EventArgs e)
{
button1.Text = c.ToString();
}
private void timer1_Tick(object sender, EventArgs e)
{
c = c + 1;
r = c % 3;
if (r == 0)
{
button1.BackColor = Color.Red;
button2.BackColor = Color.Black;
button3.BackColor = Color.Black;
}
else if (r == 1)
{
button1.BackColor = Color.Black;
button2.BackColor = Color.Yellow;
button3.BackColor = Color.Black;
}
else
{
button1.BackColor = Color.Black;
button2.BackColor = Color.Black;
button3.BackColor = Color.Green;
}
}
private void button2_Click(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
}
}
}
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