private void button1_Click(object sender, EventArgs e)
{
this.Hide();
Mainpage m = new Mainpage();
m.Show();
}
private void button4_Click(object sender, EventArgs e)
{
this.Hide();
Mainpage m = new Mainpage();
m.Show();
MessageBox.Show("you have signout successfully", "information", MessageBoxButtons.OK);
}
private void label2_Click(object sender, EventArgs e)
{
Mainpage l = new Mainpage();
l.Show();
this.Close();
}