C#: Как Вы удостоверяетесь, что строка или объект выбраны в ListView прежде, чем выполнить действие?

package main

import (
	"bufio"
	"fmt"
	"net"
	"sync"
)

var wg sync.WaitGroup
var count = 0
var timeX string = ""

var connQueue = make(chan string)

func main() {
	tcpListner := startTCPConnection()
	incomingTCPListener(tcpListner)
    wg.Wait()
}

//startTCPConnection
func startTCPConnection() net.Listener {
	tcpListner, tcpConnectonError := net.Listen("tcp", "localhost:3000")
	if tcpConnectonError != nil {
		print(tcpConnectonError)
        // return 
        log.Fatal(tcpConnectonError)
	}
	return tcpListner
}

//incomingTCPListener
func incomingTCPListener(tcpListner net.Listener) {

	for {
		incomingConnection, incomingConnectionError := tcpListner.Accept()
		if incomingConnectionError != nil {
			print(incomingConnectionError)
            return
		}
		wg.Add(1)
		go processIncomingRequest(incomingConnection)
		// wg.Wait()
	}
}

//processIncomingRequest
func processIncomingRequest(connection net.Conn) {

	defer connection.Close()

	var scanner = bufio.NewScanner(connection)

	var blob = ""
	for scanner.Scan() {
		fmt.Println("sadd")
		text := scanner.Text()
		blob += text
	}
	print(blob)
	count++
	fmt.Println("totalCount", count)
	wg.Done()
}