How to make this code parallel ?

Question

I have written some codes in Vb.Net but it runs quite slow. How can I make it become parallel programming. I need to create 1000 objects of the same type. After initialization, each object will do the same task and the objects are not inter-related to each other.

Dim List as new List(of myObjectClass)

For i as integer = 1 to 1000
  Dim anObject as new myObjectClass()
  anObject.DoSomethingUseful()
  List.add(anObject)
Next

Any idea would be really appreciated!

Answer 1

You could use Parallel.ForEach. Create your 1000 items first and then run the expensive method in a parallel execution

Dim List as new List(of myObjectClass)

For i as integer = 1 to 1000
  Dim anObject as new myObjectClass()
  List.add(anObject)
Next

System.Threading.Tasks.Parallel.ForEach(List, Sub(item)
                                        item.DoSomethingUseful()
                                        End Sub)