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Dealing with Progressive Operations

, 10 May 2010 CPOL
Through a clean OOP solution to deal with progressive operations, I will implicitly show you how OOP principles can work together to make a full, clean solution.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Erik.Utilities.Bases;
using Erik.Utilities.Interfaces;

namespace Erik.Utilities.Bases
    public class CompositePO :
        BaseProgressiveOperation, ICompositeProgressiveOperation
        protected List<IProgressiveOperation> _operations;
        protected IProgressiveOperation _currentOperation;

        protected CompositePO() { }

        public CompositePO(List<IProgressiveOperation> operations)
            _operations = operations;

            _totalSteps = _operations.Sum<IProgressiveOperation>(po => po.TotalSteps);

        public override void Start()
            _currentStep = 0;

            foreach (IProgressiveOperation po in _operations)
                _currentOperation = po;

                po.OperationProgress += 
                    (sender, e) =>




        protected virtual void OnNewOperation(EventArgs e)
            if (NewOperation != null)
                NewOperation(this, EventArgs.Empty);

        #region ICompositeProgressiveOperation Members

        public virtual IProgressiveOperation CurrentOperation
            get { return _currentOperation; }

        public event EventHandler NewOperation;


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Technical Lead
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