Question

I create dynamic threads in C# and I need to get the status of those running threads.

List<string>[] list;
list = dbConnect.Select();

for (int i = 0; i < list[0].Count; i++)
{
    Thread th = new Thread(() =>{
        sendMessage(list[0]['1']);
        //calling callback function
    });
    th.Name = "SID"+i;
    th.Start();
}

for (int i = 0; i < list[0].Count; i++)
{
    // here how can i get list of running thread here.
}

How can you get list of running threads?

Answer 1

Create a List<Thread> and store each new thread in your first for loop in it.

List<string>[] list;
List<Thread> threads = new List<Thread>();
list = dbConnect.Select();

for (int i = 0; i < list[0].Count; i++)
{
    Thread th = new Thread(() =>{
        sendMessage(list[0]['1']);
        //calling callback function
    });
    th.Name = "SID"+i;
    th.Start();
    threads.add(th)
}

for (int i = 0; i < list[0].Count; i++)
{
    threads[i].DoStuff()
}

However if you don’t need i you can make the second loop a foreach instead of a for

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As a side note, if your sendMessage function does not take very long to execute you should somthing lighter weight then a full Thread, use a ThreadPool.QueueUserWorkItem or if it is available to you, a Task