private async void ButtonSendZpl_Click(object sender, EventArgs e)
{
string strHostname = txtHostname.Text;
string strPort = ComboBoxPort.Text;
string strSendText = TextBox1.Text;
if (string.IsNullOrEmpty(strHostname))
{
MessageBox.Show("Enter a hostname.", "Send ZPL to printer", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
txtHostname.Focus();
return;
}
if (string.IsNullOrEmpty(strPort))
{
MessageBox.Show("Select a port number.", "Send ZPL to printer", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
ComboBoxPort.Focus();
return;
}
if (string.IsNullOrEmpty(strSendText))
{
MessageBox.Show("Enter some ZPL to send.", "Send ZPL to printer", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
TextBox1.Focus();
return;
}
int intPort = 9100;
int.TryParse(ComboBoxPort.Text, out intPort);
EnableControls(false);
bool boolStatus = await SendData(strHostname, intPort, strSendText);
EnableControls(true);
if (boolStatus)
{
MessageBox.Show("ZPL sent", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("Failed to send ZPL", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
private void ComboBoxPort_OnDropDownOpened(object sender, EventArgs e)
{
ComboBoxPort.SetBinding(ItemsControl.ItemsSourceProperty, new Binding {
Source = SerialPort.GetPortNames()
});
}