private void btnKeluar_Click(object sender, EventArgs e)
 {
     View.FrmDashboard f4 = new View.FrmDashboard();
     f4.ShowDialog();
     this.Dispose();
 }
 private void button4_Click(object sender, EventArgs e)
 {
     View.FrmDashboard f4 = new View.FrmDashboard();
     f4.Show();
     this.Dispose();
 }