Spawn Multiple Threads for work then wait until all finished

Question

just want some advice on \"best practice\" regarding multi-threading tasks.

as an example, we have a C# application that upon startup reads data from various \"type

Answer 1

I like @Reed's solution. Another way to accomplish the same in .NET 4.0 would be to use a CountdownEvent.

class Program
{
    static void Main(string[] args)
    {
        var numThreads = 10;
        var countdownEvent = new CountdownEvent(numThreads);

        // Start workers.
        for (var i = 0; i < numThreads; i++)
        {
            new Thread(delegate()
            {
                Console.WriteLine(Thread.CurrentThread.ManagedThreadId);
                // Signal the CountdownEvent.
                countdownEvent.Signal();
            }).Start();
        }

        // Wait for workers.
        countdownEvent.Wait();
        Console.WriteLine("Finished.");
    }
}