WPF: A Most Useful Threading Component

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ThreadingComponent
{
    /// <summary>
    /// This class represents a threadable item, which can have
    /// both an valid payload dataobject which is specified using
    /// the generic, and also an error string value
    /// </summary>
    /// <typeparam name="T">The type of the return value for the threading
    /// operation that will use a ThreadableItem</typeparam>
    public class ThreadableItem<T> : ViewModelBase
    {
        #region Data
        private T dataObject;
        private String error;
        #endregion

        #region Constructor
        public ThreadableItem(T dataObject, String error)
        {
            this.DataObject = dataObject;
            this.Error = error;
        }
        #endregion

        #region Public Properties
        public T DataObject
        {
            get { return dataObject; }
            set
            {
                dataObject = value;
                NotifyPropertyChanged("DataObject");
            }
        }

        public String Error
        {
            get { return error; }
            set 
            {
                error = value;
                NotifyPropertyChanged("Error");
            }
        }
        #endregion
    }
}