Question

In my Parallel.ForEach loop i have some objects that I need to initialize in the “local init” lambda.
If one of these objects fails to initialize, I would like to terminate the entire parallel loop.
What is the best way to do this?

Parallel.ForEach(collection,
   () => //local init
   {
      var localObjects= CreateObjects();
      foreach (var obj in localObjects)
         if (!obj.Initialize())
            // want to terminate the entire parallel loop here!!
      return localObjects;
   }
   (element, loopState, localObjects) => // loop body
   {
      // some code here
   },
   localObjects => // local finally
   {
      foreach (var obj in localObjects)
         obj.Terminate();
   });

Answer 1

The best way to do this (with out seeing any code), would be to check if the object you attempted to initialise is null, if it is, break().

I hope this helps.

Edit. Following some comments, stop() might be the better option in this case.