Click here to Skip to main content
15,891,253 members
Articles / Desktop Programming / WPF

Building an Extensible Application with MEF, WPF, and MVVM

Rate me:
Please Sign up or sign in to vote.
4.88/5 (45 votes)
15 Nov 2009LGPL316 min read 302.8K   7.4K   185  
An article for anyone interested in how to build an extensible application using WPF and the Model-View-ViewModel pattern.
// 
// Copyright (c) 2004-2006 Jaroslaw Kowalski <jaak@jkowalski.net>
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions 
// are met:
// 
// * Redistributions of source code must retain the above copyright notice, 
//   this list of conditions and the following disclaimer. 
// 
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution. 
// 
// * Neither the name of Jaroslaw Kowalski nor the names of its 
//   contributors may be used to endorse or promote products derived from this
//   software without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
// THE POSSIBILITY OF SUCH DAMAGE.
// 

using System;
using System.Collections;
using System.Collections.Specialized;

using NLog;
using NLog.Targets;
using NLog.Filters;

namespace NLog.Config
{
    /// <summary>
    /// Provides simple programmatic configuration API used for trivial logging cases.
    /// </summary>
    public class SimpleConfigurator
    {
#if !NETCF
        /// <summary>
        /// Configures NLog for console logging so that all messages above and including
        /// the <see cref="LogLevel.Info"/> level are output to the console.
        /// </summary>
        public static void ConfigureForConsoleLogging()
        {
            ConfigureForConsoleLogging(LogLevel.Info);
        }

        /// <summary>
        /// Configures NLog for console logging so that all messages above and including
        /// the specified level are output to the console.
        /// </summary>
        /// <param name="minLevel">The minimal logging level.</param>
        public static void ConfigureForConsoleLogging(LogLevel minLevel)
        {
            ConsoleTarget consoleTarget = new ConsoleTarget();

            LoggingConfiguration config = new LoggingConfiguration();
            LoggingRule rule = new LoggingRule("*", minLevel, consoleTarget);
            config.LoggingRules.Add(rule);
            LogManager.Configuration = config;
        }
#endif

        /// <summary>
        /// Configures NLog for to log to the specified target so that all messages 
        /// above and including the <see cref="LogLevel.Info"/> level are output.
        /// </summary>
        /// <param name="target">The target to log all messages to.</param>
        public static void ConfigureForTargetLogging(Target target)
        {
            ConfigureForTargetLogging(target, LogLevel.Info);
        }

        /// <summary>
        /// Configures NLog for to log to the specified target so that all messages 
        /// above and including the specified level are output.
        /// </summary>
        /// <param name="target">The target to log all messages to.</param>
        /// <param name="minLevel">The minimal logging level.</param>
        public static void ConfigureForTargetLogging(Target target, LogLevel minLevel)
        {
            LoggingConfiguration config = new LoggingConfiguration();
            LoggingRule rule = new LoggingRule("*", minLevel, target);
            config.LoggingRules.Add(rule);
            LogManager.Configuration = config;
        }

        /// <summary>
        /// Configures NLog for file logging so that all messages above and including
        /// the <see cref="LogLevel.Info"/> level are written to the specified file.
        /// </summary>
        /// <param name="fileName">Log file name.</param>
        public static void ConfigureForFileLogging(string fileName)
        {
            ConfigureForFileLogging(fileName, LogLevel.Info);
        }

        /// <summary>
        /// Configures NLog for file logging so that all messages above and including
        /// the specified level are written to the specified file.
        /// </summary>
        /// <param name="fileName">Log file name.</param>
        /// <param name="minLevel">The minimal logging level.</param>
        public static void ConfigureForFileLogging(string fileName, LogLevel minLevel)
        {
            FileTarget target = new FileTarget();
            target.FileName = fileName;
            ConfigureForTargetLogging(target, minLevel);
        }
    }
}

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.

License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)


Written By
Engineer
Canada Canada
By day I'm a Professional Engineer, doing .NET, VB6, SQL Server, and Automation (Ladder Logic, etc.) programming.

On weekends I write and maintain an open source extensible application framework called SoapBox Core.

In the evenings I provide front line technical support for moms4mom.com and I help out with administrative tasks (like formatting stuff). I also pitch in as a moderator from time to time.

You can follow me on twitter.

Comments and Discussions