Sysnet.WPFUI/AppCode/ActionICommand.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace Sysnet.WPFUI
{
    [TypeConverter(typeof(ActionICommandConverter))]
    public class ActionICommand : ICommand
    {
        public static ActionICommand Create(Action action)
        {
            Sysnet.Common.Util.RequireNotNull(action, "action");
            return Create(action, null);
        }

        public static ActionICommand Create(Action action, Func<bool> canExecuteFunction)
        {
            Sysnet.Common.Util.RequireNotNull(action, "action");

            Action foo;
            return Create(action, canExecuteFunction, out foo);
        }

        public static ActionICommand Create(Action action, Func<bool> canExecuteFunction, out Action canExecuteChanged)
        {
            Sysnet.Common.Util.RequireNotNull(action, "action");

            ActionICommand command = new ActionICommand(action, canExecuteFunction);

            canExecuteChanged = command.onCanExecuteChanged;

            return command;
        }

        public bool CanExecute
        {
            get
            {
                if (m_canExecuteFunction != null)
                {
                    return m_canExecuteFunction();
                }
                else
                {
                    return true;
                }
            }
        }

        public void Execute()
        {
            m_action();
        }

        public event EventHandler CanExecuteChanged;