This is small Example. I had a POS Application in VB6 with this code.
Me.EpsonFPHostControl1.SendCommand
While EpsonFPHostControl1.State = EFP_S_Busy
DoEvents
Wend
This code is almost the same in VB.NET
Me.AxEpsonFPHostControl1.SendCommand()
While AxEpsonFPHostControl1.CtlState = EpsonFPHostControlX.TxFiscalState.EFP_S_Busy
Application.DoEvents()
End While