DevForce Community Forum : async and await http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : Community Forum : async and await Sat, 11 Apr 2026 07:39:35 -700 Sat, 07 Apr 2012 11:00:08 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=3305 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ async and await : Justresurrectingthis thread. The... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=13249#13249 Author: mgood
Subject: 3305
Posted: 07-Apr-2012 at 11:00am

Just resurrecting this thread. The latest Cocktail source code has now support for the Task-based Asynchronous Pattern in WPF and SL5. 

http://cocktail.codeplex.com/SourceControl/list/changesets 

This will be part of the next release.

If you are using the Async CTP, add the following class to your project in order to make all Cocktail asynchronous operations awaitable:

using System.Runtime.CompilerServices;

namespace Cocktail
{
    public static class AwaitFns
    {
        public static TaskAwaiter<T> GetAwaiter<T>(this OperationResult<T> operation)
        {
            return operation.AsTask().GetAwaiter();
        }

        public static TaskAwaiter GetAwaiter(this OperationResult operation)
        {
            return operation.AsTask().GetAwaiter();
        }

        public static TaskAwaiter<T> GetAwaiter<T>(this DialogOperationResult<T> operation)
        {
            return operation.AsTask().GetAwaiter();
        }
    }
}
]]> Sat, 07 Apr 2012 11:00:08 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=13249#13249 async and await : I have been using the async... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12870#12870 Author: mseeli
Subject: 3305
Posted: 29-Feb-2012 at 11:29pm

I have been using the async CTP in my project for month now. It works just fine. 
Here my wrapper around DevForce query.ExecuteAsync:

    public static class VisExtensions    {        static readonly ILog Log = LogManager.GetLog(typeof(VisExtensions));         public static Task<List<T>> VisExecuteAsync<T>(this IEntityQuery<T> query) where T : Entity        {            var tcs = new TaskCompletionSource<List<T>>();                        query.ExecuteAsync(op =>            {                if (op.Error != null)                {                    Exception ex2 = new Exception("VisExtensions.VisExecuteAsync.Query.ExecuteAsync: Exception", op.Error);                    Log.Error(ex2);                    tcs.TrySetException(op.Error);                }                else                {                    List<T> resultList = new List<T>();                    foreach (var r in op.Results)                    {                        resultList.Add(r);                    }                    tcs.TrySetResult(resultList);                }            });           return tcs.Task;        }
    }

]]> Wed, 29 Feb 2012 23:29:38 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12870#12870 async and await : No problem.Keep up the good... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12862#12862 Author: GeorgeB
Subject: 3305
Posted: 29-Feb-2012 at 10:48am

No problem.
 
Keep up the good work with Cocktail.
]]> Wed, 29 Feb 2012 10:48:05 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12862#12862 async and await : Oh btw, in the meantime, there&#039;s... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12861#12861 Author: mgood
Subject: 3305
Posted: 29-Feb-2012 at 10:47am

Oh btw, in the meantime, there's nothing stopping you from writing a wrapper that wraps a DevForce asynchronous operation as a Task, so you could do the following. Take a look at AsOperationResult for how Cocktail wraps a DevForce operation as an OperationResult<T>, which implements IResult in order to be consumable from a Caliburn Coroutine. Wrapping it as a Task is not much different.
 
public async Task<EntitySaveOperation> SaveAsync(Action<IEnumerable> onSuccess, Action<Exception> onFail)
{
     return await Manager.SaveChangesAsync().AsTask();
}
]]> Wed, 29 Feb 2012 10:47:58 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12861#12861 async and await : No committment to supporting... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12860#12860 Author: mgood
Subject: 3305
Posted: 29-Feb-2012 at 10:43am

No committment to supporting it before the official release of .NET 4.5, but we will support it.]]> Wed, 29 Feb 2012 10:43:38 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12860#12860 async and await : Just to be difficult? No seriously... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12859#12859 Author: GeorgeB
Subject: 3305
Posted: 29-Feb-2012 at 10:38am

Just to be difficult? No seriously - we've used async / wait as much as we can in our app.
 
I'm using coroutines but I just want keep everything standard.
 
Now that we have a go-live beta of .Net 4.5, will we see anything soon?
 
Kr
George
]]> Wed, 29 Feb 2012 10:38:28 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12859#12859 async and await : Neither Cocktail nor DevForce... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12846#12846 Author: mgood
Subject: 3305
Posted: 28-Feb-2012 at 1:32pm

Neither Cocktail nor DevForce supports Task and async/await yet. It's still CTP. What's wrong with Coroutines? They do everything async/await does without the syntax sugar. ]]> Tue, 28 Feb 2012 13:32:49 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12846#12846 async and await : Hi Okay just in case someone... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12844#12844 Author: GeorgeB
Subject: 3305
Posted: 28-Feb-2012 at 11:17am

Hi
Okay just in case someone asks:-
I have a 3 step process which has to save a record, then if that is successful, save a record to another table, and if that is successful, save a another record to a third table.
This is running inside a foreach loop where I might make 20 iterations.
Thanks
George
]]> Tue, 28 Feb 2012 11:17:48 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12844#12844 async and await : Hi For a number of reasons... http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12843#12843 Author: GeorgeB
Subject: 3305
Posted: 28-Feb-2012 at 10:56am

Hi
For a number of reasons (too many to explain here) I would like to use async and await from the Async CTP in my Silverlight app.
Any suggestions on how my (Cocktail) Repository might define the Manager.SaveChangesAsync() ?
Tried this but EntitySaveOperation isn't 'awaitable'
public async Task<EntitySaveOperation> SaveAsync(Action<IEnumerable> onSuccess, Action<Exception> onFail)
{     return await Manager.SaveChangesAsync();}
Thanks
George


Edited by GeorgeB - 28-Feb-2012 at 11:06am]]> Tue, 28 Feb 2012 10:56:29 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3305&PID=12843#12843