//Going to staff management form when click on staffmanagement button from dashboard
private void staffdash_Click(object sender, EventArgs e)
{
StaffManagement stm = new StaffManagement();
this.Hide();
stm.ShowDialog();
}
//back button
private void button4_Click(object sender, EventArgs e)
{
StaffManagement sm = new StaffManagement();
this.Hide();
sm.ShowDialog();
}