Here was developed application to sniffer data from local computer and to read .pcap files and marshaling its data from C++ native code to WPF/.Net application

I've used here https://www.tcpdump.org/pcap.html and https://pcapplusplus.github.io/ c++ library and wrap them and handle it of native c++ code

We can use as current streaming data from your computer as and download previously saved streaming data from loaded file