private void materialFlatButton2_Click(object sender, EventArgs e)
{
frmequipmentdiagnosis equipdiagnose = new frmequipmentdiagnosis();
equipdiagnose.Show();
this.Hide();
}
private void pictureBox1_Click(object sender, EventArgs e)
{
this.Close();
frmequipmentdiagnosis equipdiagnosis = new frmequipmentdiagnosis();
equipdiagnosis.Show();
}