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Introducing the Model Thread View Thread Pattern

, 1 May 2010 BSD
Reduce threading code, and increase UI responsiveness with a new pattern extending MVVM.
Mtvt_2010_5_1__12_15.zip
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ServiceLocation
Microsoft.Practices.ServiceLocation.dll
//===================================================================================
// Microsoft patterns & practices
// Composite Application Guidance for Windows Presentation Foundation and Silverlight
//===================================================================================
// Copyright (c) Microsoft Corporation.  All rights reserved.
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY
// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE.
//===================================================================================
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious.  No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
//===================================================================================
using System;
using Microsoft.Practices.ServiceLocation;

namespace Microsoft.Practices.Composite
{
    /// <summary>
    /// Defines extension methods for the <see cref="ServiceLocator"/> class.
    /// </summary>
    public static class ServiceLocatorExtensions
    {
        /// <summary>
        /// Attempts to resolve specified type from the underlying <see cref="IServiceLocator"/>.
        /// </summary>
        /// <remarks>
        /// This will return null on any <see cref="ActivationException"/>.</remarks>
        /// <param name="locator">Locator to use in resolving.</param>
        /// <param name="type">Type to resolve.</param>
        /// <returns>T or null</returns>
        public static object TryResolve(this IServiceLocator locator, Type type)
        {
            try
            {
                return locator.GetInstance(type);
            }
            catch (ActivationException)
            {
                return null;
            }
        }

        /// <summary>
        /// Attempts to resolve specified type from the underlying <see cref="IServiceLocator"/>.
        /// </summary>
        /// <remarks>
        /// This will return null on any <see cref="ActivationException"/>.</remarks>
        /// <typeparam name="T">Type to resolve.</typeparam>
        /// <param name="locator">Locator to use in resolving.</param>
        /// <returns>T or null</returns>
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1004:GenericMethodsShouldProvideTypeParameter")]
        public static T TryResolve<T>(this IServiceLocator locator) where T: class
        {
            return locator.TryResolve(typeof(T)) as T;
        }
    }
}

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This article, along with any associated source code and files, is licensed under The BSD License

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About the Author

Daniel Vaughan
President Outcoder
Switzerland Switzerland
Daniel Vaughan is a Microsoft MVP and co-founder of Outcoder, a Swiss software and consulting company dedicated to creating best-of-breed user experiences and leading-edge back-end solutions, using the Microsoft stack of technologies--in particular WPF, WinRT, Windows Phone, and also Xamarin.Forms.
 
Daniel is the author of Windows Phone 8 Unleashed and Windows Phone 7.5 Unleashed, both published by SAMS.
 
Daniel is the developer behind several acclaimed Windows Phone apps including Surfy, Intellicam, and Splashbox; and is the creator of a number of popular open-source projects including Calcium SDK, and Clog.
 
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Web04 | 2.8.141223.1 | Last Updated 1 May 2010
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