Threadpool & Generic Lists

[AshBrennan]

Hey all

Well I've got the basis of using single threads to process a piece of logic within my code, however I'm not certain about the threadpool. Below is a pseudo style example of what I'd like to achieve.

   private List<string> ManyStrings = new List<string>();
   private List<string> ProcessedStrings = new List<string>();

for (int i = 0; i < ManyStrings.Count; i++)
            {
             
                ThreadPool.QueueUserWorkItem(EditStrings);
               
            }


  static void EditStrings(object state)
        {
             // lots of string manipulation here
ProcessedStrings.Items.Add(newstring);
            
        }

Obviously this code wouldn't work in reality, I think there needs to be some sort of logic to lock threads accessing the same string and add a new string (race condition). Also within the EditStrings method, external fuctions might be called, so the same may apply to this, and there needs to be a method of passing the a string into the EditStrings method, however it will only accept one parameter argument, so maybe using delegates would be nice.

Help appreciated.

[mariocatch]

The one parameter is of type object. All .NET types derive from System.Object, therefor, you can create a struct or a class which contains multiple properties/members. Construct said class, pass it in as the 'object' parameter to your thread. Then, within your thread method (ie: EditStrings), cast the parameter to the class type you created and extract the members from there.