My fault. I have two declarations for open port, one inside my comms form and another on my user control form. I only changed the user control form that was a backup. It works fine with the : _port.DtrEnable = True
many thanks!
My fault. I have two declarations for open port, one inside my comms form and another on my user control form. I only changed the user control form that was a backup. It works fine with the : _port.DtrEnable = True
many thanks!