Silverlight Continuation Tasks Library

Project Description

The Silverlight Continuation Tasks Library provides a simplification to chain a continuation of asynchronous tasks, on completion, to invoke a second task ... one after another to any arbitrary length. The purpose of this library is to reduce Silverlight code from verbose asynchronous callback event handling.

Quick Samples

TaskQueue Class

Namespace: ContinuationTasks
Example:

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using ContinuationTasks;

namespace MySilverlightApp1.Views
{
    public partial class MyPage1 : Page
    {
        private TaskQueue _DelayReloader;

        public MyPage1()
        {
            InitializeComponent();

            _DelayReloader = new TaskQueue();
            _DelayReloader.AddTask(() => { domainDataSource1.Load(); }, 100,
                                   () => domainDataSource1.CanLoad, 10);
            _DelayReloader.AddTask(() => { domainDataSource2.Load(); }, 100,
                                   () => domainDataSource2.CanLoad, 10);
            _DelayReloader.AddTask(() => { domainDataSource3.Load(); }, 100,
                                   () => domainDataSource3.CanLoad, 10);
            ...
        }

        private void btnApply_Click(object sender, RoutedEventArgs e)
        {
            ...
                _DelayReloader.Start(true);
            ...
        }
    }
}

ContinuationEntities<T> Class

Namespace: ContinuationTasks.RIA_Client
This class further encapsulates continuations specially for RIA Services client to submit a set of Entities' changes in sequence.
Example:

using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using ContinuationTasks;
using ContinuationTasks.RIA_Client;

namespace MySilverlightApp1.Views
{
    public partial class MyPage2 : Page
    {
        private ContinuationEntities<MyDomainContext> _ContContext;
        private ContinuationEntities<MyDomainContext> ContContext
        {
            get
            {
                if (_ContContext == null)
                    _ContContext = new ContinuationEntities<MyDomainContext>
                                       (myDomainContext, 50);
                return _ContContext;
            }
        }

        private void btnSave_Click(object sender, RoutedEventArgs e)
        {
            submittingBusyIndicator.IsBusy = true;
            ...
            ContContext.SubmitEntities(myEntityCollection,
                op => { op.HandleSubmittedError(); },
                () => { _DelayReloader.Start(true);
                        submittingBusyIndicator.IsBusy = false; });
            ...
        }
    }
}