How to view dynamically changing pcap file in Wireshark?

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I have a text file that is appended with packet data for every external button press. I have used text2pcap to convert .txt to pcap format which is viewable on Wireshark. But I am not able to view the packets on Wireshark in real-time since it displays only previously captured packets saved in .pcap. Is there a way to view pcap files on Wireshark in real time when the button is pressed?

Thanks!