MVVM Dynamic Commands

using System;
using System.Windows.Data;
using System.Windows.Input;

namespace ListBoxHyperlinkDemo.ViewModel
{
    [ValueConversion(typeof(string), typeof(ICommand))]
    public class CommandConverter : IValueConverter
    {
        #region fields

        // Member variables
        private MainWindowViewModel m_ViewModel;

        #endregion

        #region Constructor

        public CommandConverter(MainWindowViewModel viewModel)
        {
            m_ViewModel = viewModel;
        }

        #endregion

        #region IValueConverter Members

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            // Exit if value is null
            if (value == null) return null;

            // Initialize
            string commandName = value.ToString();
            MainWindowViewModel viewModel = (MainWindowViewModel)parameter;
            ICommand command = null;

            // Create command 
            switch (commandName)
            {
                case "CompleteTransaction":
                    command = new CompleteTransaction(m_ViewModel);
                    break;

                case "ReviewAccount":
                    command = new ReviewAccout(m_ViewModel);
                    break;

                default:
                    throw new ArgumentException("Invalid ICommand name passed in.");
            }

            // Set return value
            return command;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        #endregion
    }
}