Threadpool & Generic Lists
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Thread: Threadpool & Generic Lists

  1. #1
    Join Date
    Jul 2009
    Posts
    43

    Threadpool & Generic Lists

    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.

    Code:
       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.
    New to C# | Using VS 2008 with 3.5.

  2. #2
    Join Date
    Apr 2007
    Location
    Florida
    Posts
    403

    Re: Threadpool & Generic Lists

    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.

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