Thread/Event how to excute a method when boolean variable goes true (from other class)

Question

I have one classes that has an array. The code within this class set a bool variable to true (arrayfull=true), I would like to excute a method within other class that process the array.

I would like a independent thread to the set up that automatically response to this event and excute an method (within same namespace).

Please include source code / demo code how this is done.

Thanks

Vulpes · Answer

Try this: using System; using System.Threading; namespace MyNameSpace { class MyArrayWrapper { bool arrayfull; public bool ArrayFull { get { return arrayfull; } } int length; public int Length { get { return length; } } int?[] myArray; // use nullable type so can tell when all elements have been set public event Action ArrayFilled; public MyArrayWrapper(int length) { myArray = new int?[length]; // all null by default this.length = length; } public int? this[int index] { get { if (index >= 0 && index { return myArray[index]; } else throw new IndexOutOfRangeException(); } set { if (index >= 0 && index { myArray[index] = value; foreach(int? i in myArray) { if (i == null) return; } arrayfull = true; if (ArrayFilled != null) ArrayFilled(this); // if full fire event } else throw new IndexOutOfRangeException(); } } } class ArrayProcessor { public void ProcessArray(MyArrayWrapper maw) { for(int i = 0; i { maw[i] = i; } } } class Program { static void Main() { Thread t = new Thread(Process); t.Start(); t.Join(); Console.WriteLine(Press any key to exit program); Console.ReadKey(); } static void WatchProcessing(MyArrayWrapper maw) { Console.WriteLine(arrayfull is now {0} maw.ArrayFull); } static void Process() { MyArrayWrapper maw = new MyArrayWrapper(100); Console.WriteLine(arrayfull is initially {0} maw.ArrayFull); maw.ArrayFilled += WatchProcessing; // subscribe to event ArrayProcessor ap = new ArrayProcessor(); ap.ProcessArray(maw); // process the array } } }