implement a thread pool in csharp

main.cs
using System;
using System.Collections.Generic;
using System.Threading;

public class ThreadPoolExample
{
    // Queue of work items to be processed by the thread pool
    private readonly Queue<Action> workQueue = new Queue<Action>();

    // Semaphore used to signal that there's work to be processed
    private readonly SemaphoreSlim workSignal = new SemaphoreSlim(0);

    // Number of worker threads in the thread pool
    private readonly int threadCount;

    public ThreadPoolExample(int threadCount)
    {
        this.threadCount = threadCount;
    }

    public void QueueWorkItem(Action workItem)
    {
        // Add the work item to the queue
        lock (workQueue)
        {
            workQueue.Enqueue(workItem);
        }

        // Signal the semaphore to wake up a worker thread
        workSignal.Release();
    }

    public void Start()
    {
        // Create the worker threads
        for (int i = 0; i < threadCount; i++)
        {
            Thread thread = new Thread(WorkLoop);
            thread.IsBackground = true;
            thread.Start();
        }
    }

    private void WorkLoop()
    {
        while (true)
        {
            // Wait for a signal from the semaphore
            workSignal.Wait();

            // Try to get a work item from the queue
            Action workItem = null;
            lock (workQueue)
            {
                if (workQueue.Count > 0)
                {
                    workItem = workQueue.Dequeue();
                }
            }

            // If we got a work item, execute it
            if (workItem != null)
            {
                workItem();
            }
        }
    }
}
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