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namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
int x = 0;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
}
private void timer1_Tick(object sender, EventArgs e)
{
x++;
if (x % 3 == 0)
{ button1.BackColor = System.Drawing.Color.Green;
button2.BackColor = System.Drawing.Color.White;
button3.BackColor = System.Drawing.Color.White;
}
else if (x % 3 == 1)
{
button2.BackColor = System.Drawing.Color.Yellow;
button1.BackColor = System.Drawing.Color.White;
button3.BackColor = System.Drawing.Color.White;
}
else if (x % 3 == 2)
{
button3.BackColor = System.Drawing.Color.Red ; button1.BackColor = System.Drawing.Color.White;
button2.BackColor = System.Drawing.Color.White;
}
}
}
}
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