Click here to Skip to main content
Click here to Skip to main content
Add your own
alternative version

(Hybrid Smart Client) RSS Media Player

, 9 Mar 2009 CPOL
A WPF application for viewing RSS video feeds. Built using the MVVM pattern.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Input;
using System.Diagnostics;

namespace RSSVideoPlayer.Common
    /// <summary>
    /// A command whose sole purpose is to 
    /// relay its functionality to other
    /// objects by invoking delegates. The
    /// default return value for the CanExecute
    /// method is 'true'.
    ///  Copied from Josh smith's WPF MVVM Artical
    /// </summary>
    public class RelayCommand : ICommand
        #region Fields

        readonly Action<object> _execute;
        readonly Predicate<object> _canExecute;

        #endregion // Fields

        #region Constructors

        /// <summary>
        /// Creates a new command that can always execute.
        /// </summary>
        /// <param name="execute">The execution logic.</param>
        public RelayCommand(Action<object> execute)
            : this(execute, null)

        /// <summary>
        /// Creates a new command.
        /// </summary>
        /// <param name="execute">The execution logic.</param>
        /// <param name="canExecute">The execution status logic.</param>
        public RelayCommand(Action<object> execute, Predicate<object> canExecute)
            if (execute == null)
                throw new ArgumentNullException("execute");

            _execute = execute;
            _canExecute = canExecute;

        #endregion // Constructors

        #region ICommand Members

        public bool CanExecute(object parameter)
            return _canExecute == null ? true : _canExecute(parameter);

        public event EventHandler CanExecuteChanged
            add { CommandManager.RequerySuggested += value; }
            remove { CommandManager.RequerySuggested -= value; }

        public void Execute(object parameter)

        #endregion // ICommand Members

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Software Developer (Senior) Anytime Fitness
United States United States
No Biography provided
Follow on   Twitter

| Advertise | Privacy | Terms of Use | Mobile
Web04 | 2.8.150327.1 | Last Updated 9 Mar 2009
Article Copyright 2009 by Paul_Wade
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid