Question

I am calling few methods on a button click.

functionA()

functionB()

functionC()

All three functions are independent from each other and they take long time to execute. I checked and found that by threading I can run all three together which will save the execution time.

As I am new to threading concept, could anyone please guide me the simplest way I can do threading in scenario or other way which will be useful in this scenario.

EDIT

One more problem in the same function:

I am binding 5 gridviews after the three functions execution. Like this

            gv1.DataSource = GetData("Mill");
            gv1.DataBind();

            gv2.DataSource = GetData("Factory");
            gv2.DataBind();

            gv3.DataSource = GetData("Garage");
            gv3.DataBind();

            gv4.DataSource = GetData("Master");
            gv4.DataBind();

They all are using the same method for getting the result and they are also taking time to load. Is there any way I can run them parallel too? I afraid, because they are using same method to get the data. Is it possible to do threading for them. How ?

Answer 1

I am not sure how Parallel.Invoke() decides what to execute in parallel, but if you want an assurance that they will execute in parallel, use threads:

var t1 = new Thread(MySlowFunction);
t1.IsBackground = true;
t1.Start();

var t2 = new Thread(MySlowFunction);
t2.IsBackground = true;
t2.Start();

# To resync after completion:
t1.Join();
t2.Join();

Or even better, use the ThreadPool:

  ThreadPool.QueueUserWorkItem(MyWork);

Remember to handle your thread exceptions.