private void textBox4_Enter(object sender, KeyPressEventArgs e)
{
if (xmlFile == null)
{
label8.Text = "No file has been selected. Please select \"New\" or \"Open\" to select a file.";
}
else
{
if (e.KeyChar == (char)Keys.Enter)
{
ActionsClass.saveMACAddr(xmlFile, "sensor", textBox3.Text, "macAddr", textBox4.Text);
checkBox4.Checked = true;
label2.Text = "Modified";
}
}
}
