Simplest way to run three methods in parallel in C#

Question

I have three methods that I call to do some number crunching that are as follows

results.LeftFront.CalcAi();  
results.RightFront.CalcAi();  
results.RearSus         


        

Answer 1

To run parallel methods which are independent of each other ThreadPool.QueueUserWorkItem can also be used. Here is the sample method-

public static void ExecuteParallel(params Action[] tasks)
{
    // Initialize the reset events to keep track of completed threads
    ManualResetEvent[] resetEvents = new ManualResetEvent[tasks.Length];

    // Launch each method in it's own thread
    for (int i = 0; i < tasks.Length; i++)
    {
        resetEvents[i] = new ManualResetEvent(false);
        ThreadPool.QueueUserWorkItem(new WaitCallback((object index) =>
            {
                int taskIndex = (int)index;

                // Execute the method
                tasks[taskIndex]();

                // Tell the calling thread that we're done
                resetEvents[taskIndex].Set();
            }), i);
    }

    // Wait for all threads to execute
    WaitHandle.WaitAll(resetEvents);
}

More detail about this function can be found here:
http://newapputil.blogspot.in/2016/03/running-parallel-tasks-using.html