DevForce Community Forum : new user question

DevForce Community Forum : new user question http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : new user question Tue, 21 Apr 2026 10:41:26 -700 Wed, 26 May 2010 15:31:51 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=1728 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ new user question : Originally posted by WardBellWe... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=7065#7065 Author: iosub
Subject: 1728
Posted: 26-May-2010 at 3:31pm

Originally posted by WardBell

We address it in "Part 4" where we fix this and a few other "issues" in our first pass design. Code and video for Part 4 are already to load to the web. Haven't written the doc for it yet but the video is pretty clear about what to do ... at least I think so.

Here's a sneak preview of the videos: http://www.ideablade.com/Videos/DevForce2010DevelopersTour/

Ward.... FANTASTIC VIDEO!!!!!! you got an "A" :-) really usefull.. Great Job!!

Thank you!!!

Is code avaible? or is part of the Rc2Alpha??? (I don't have the dev computer here..)

Btw...

I have move to C# :-)

Is on the video the Intellysense so diferent because the "reSharper"??? do you think is a good tool to buy?

Edited by iosub - 26-May-2010 at 3:34pm]]> Wed, 26 May 2010 15:31:51 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=7065#7065 new user question : We address it in "Part 4"... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=7058#7058 Author: WardBell
Subject: 1728
Posted: 26-May-2010 at 12:08pm

We address it in "Part 4" where we fix this and a few other "issues" in our first pass design. Code and video for Part 4 are already to load to the web. Haven't written the doc for it yet but the video is pretty clear about what to do ... at least I think so.

Here's a sneak preview of the videos: http://www.ideablade.com/Videos/DevForce2010DevelopersTour/

]]> Wed, 26 May 2010 12:08:34 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=7058#7058 new user question : Originally posted by WardBellThanks,... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=7053#7053 Author: iosub
Subject: 1728
Posted: 26-May-2010 at 5:11am

Originally posted by WardBell

Thanks, Iosu.

We are aware that "Simple Steps" does not load the data until you push the button. Very unfriendly. We will address it.

Hi, I have download DevForce2010RC2alpha and this problem is not fixed yet.. Do you know a workaround?? Or is going to be fixed on next Rc2 Drop??

Thanks!

]]> Wed, 26 May 2010 05:11:20 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=7053#7053 new user question : Thanks, Iosu. We are aware... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6592#6592 Author: WardBell
Subject: 1728
Posted: 21-Apr-2010 at 12:54pm

Thanks, Iosu.

We are aware that "Simple Steps" does not load the data until you push the button. Very unfriendly. We will address it.

]]> Wed, 21 Apr 2010 12:54:35 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6592#6592 new user question : Hi.. Thanks again for the support..... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6588#6588 Author: iosub
Subject: 1728
Posted: 21-Apr-2010 at 11:14am

Hi..

Thanks again for the support.. I keep evaluation your product.. Looks promising :-)

remember this also:

the C:\Users\Public\Documents\DevForce 2010\Learning Resources\030_BaseApps\SilverlightApps\Tutorials\100SLV_Tour\CodeCS\Tour_Pt01Completed\SimpleSteps does NOT load the data when run the application

And C:\Users\Public\Documents\DevForce 2010\Learning Resources\030_BaseApps\SilverlightApps\Tutorials\100SLV_Tour\CodeCS\Tour_Pt02Completed DOES load but only when I click on Next Record on the DataForm

I don't think is my mistaque... so better if you checkit so the learning course is good :-)

Iosu

]]> Wed, 21 Apr 2010 11:14:35 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6588#6588 new user question : Thanks for your understanding... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6587#6587 Author: WardBell
Subject: 1728
Posted: 21-Apr-2010 at 11:05am

Thanks for your understanding and your patience, Iosu.

We do care about our VB community and we will catch up.

I realized too late that there is a VB analog to the "method group" syntax we wrote in C#. It is as follows:

' The VB way to use "method group" syntax
Return query.ExecuteAsync(

Sub(op) op.Results.ForEach(AddressOf employees.Add))

This is not new to C# 4 / VB 10. The VB translation of method group syntax has "always" been to prefix it with "AddressOf".

The method group syntax is tidy in C# ... and I wouldn't want to distort C# coding practice in any case.

But I think the VB translation isn't that bad. VB will always be "more wordy" than C#; you like that ... or you don't. The differences have pretty much come down to this particular point of preference.

I'm not having trouble with VB Intellisense on ForEach. It gives the proper information ... when you remember to say "AddressOf". If you don't, it presents an ugly, unhelpful message about "ambiguity". That's just the way the VB compiler handles extension methods I guess. I don't know what to say. Not sure C# is much better either.

Happy coding.

]]> Wed, 21 Apr 2010 11:05:21 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6587#6587 new user question : HI Yes you are right I was... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6576#6576 Author: iosub
Subject: 1728
Posted: 21-Apr-2010 at 5:05am

HI

Yes you are right I was getting with a bad imprecision.. Don't worry I understad that VB is not your first language (I'm bask so English is not my first language also :-) )

Ok,I was traying yesterday all day for a solution.. And these are my conclusions...

1.- The intelissence of vb is not working correctly with ".ForEach"

when you write the :

query.ExecuteAsync(Sub(op) op.Results (when you push "." ) does not show up the "ForEach" on the list so I thought that it was not the right way to do.. Instead I writed this:

query.ExecuteAsync.Results.ForEach(Sub(o) employees.Add(o)) witch does show ForEach on the list but it does not load data.

Now with:

query.ExecuteAsync(Sub(op) op.Results.ForEach(Sub(r) employees.Add(r))) it works!

My conclusions for VB.Net Users and Ideablade.

1.- Ideablade makes the tutorials in VB.net also

2.- Ideablade makes the C# code as close as posible to VB.Net, without using C# compiler "compiler's ability " or tricks.. So for VB.net programer is much easy to translate c# to Vb.net (also converters).

Thank you for your help.

Iosu

Btw...

the C:\Users\Public\Documents\DevForce 2010\Learning Resources\030_BaseApps\SilverlightApps\Tutorials\100SLV_Tour\CodeCS\Tour_Pt01Completed\SimpleSteps does not load the data when run...

]]> Wed, 21 Apr 2010 05:05:09 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6576#6576 new user question : Hi Iosu - Sorry about the delay... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6566#6566 Author: WardBell
Subject: 1728
Posted: 20-Apr-2010 at 7:12pm

Hi Iosu -

Sorry about the delay and imprecision in our replies. VB is not our first language and we struggle a bit. VB 10 in .NET 4 is new to us. We like the improvements ... but it will take some getting used to.

In VB 9, one could not write "statement lambdas". Now you can. I don't think the conversion tools have caught up.

So I'm going to show you a few ways you could write the query you have in mind.

Please note that the "ForEach" is a DevForce-provided extension method on IEnumerable; it's located in IdeaBlade.Core.EnumerableFns. You have to add the Import.

In all of the following examples, I assume

Imports DomainModel
Imports System.Collections.Generic
Imports IdeaBlade.EntityModel
Imports IdeaBlade.Core

...

Dim employees As New List(Of Employee)
Dim query = mgr.Employees ' mgr is an EntityManager instance

Here is the one statement that is closest to the C# expression you mentioned:

query.ExecuteAsync(Sub(op) op.Results.ForEach(Sub(r) employees.Add(r)))

You almost had it! You would have figured this out had we written the C# as

query.ExecuteAsync(op => op.Results.ForEach((r)=> employees.Add(r)))

We took advantage of the C# compiler's ability to translate the method group, "Employees.Add", into the equivalent of "Sub(r) employees.Add(r))". That's what let us write:

query.ExecuteAsync(op => op.Results.ForEach(employees.Add))

VB has some other nice tricks but it doesn't have this one :-)

If you don't like our ForEach extension method, you could write the query as:

query.ExecuteAsync(
      Sub(op As EntityQueryOperation(Of Employee))
        For Each emp In op.Results
          employees.Add(emp)
        Next
      End Sub)

DevForce also offers an alternative syntax that is more "event oriented."

The ExecuteAsync returns an EntityQueryOperation(Of T) object that has a "Completed" event. You can handle that instead of relying on the callback. The "Completed" handler receives an "EntityQueriedEventArgs(Of T)".

Dim qop = query.ExecuteAsync()

AddHandler _
    qop.Completed,
    Sub(sender, args)
      args.Results.ForEach(Sub(r) employees.Add(r))
    End Sub

Once again, should you prefer to do write the "For Each" yourself, you could say:

Dim qop = query.ExecuteAsync()

AddHandler _
    qop.Completed,
    Sub(sender, args)
      For Each emp In args.Results
        employees.Add(emp)
      Next
    End Sub

Important note: we do not show exception handling in these examples. Error information is available both from the Operation object (which is passed into the callback) and in the EntityQueriedEventArgs. Production code would check for errors.

Hope this helps.

]]> Tue, 20 Apr 2010 19:12:41 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6566#6566 new user question : Hi I'm using net4 (devforce... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6554#6554 Author: iosub
Subject: 1728
Posted: 20-Apr-2010 at 2:48pm

I'm using net4 (devforce 2010)

I have try with also with "query.ExecuteAsync(Sub(op) op.Results.ForEach(Employees.Add)) "

error

Error 1 Overload resolution failed because no accessible 'ExecuteAsync' can be called with these arguments ..

I could not think that this was so hard... :-(

do you have on ideablade code examples on VB.net??

Thanks

Iosu

]]> Tue, 20 Apr 2010 14:48:10 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6554#6554 new user question : Are you using .NET 3.5 or .NET... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6553#6553 Author: davidklitzke
Subject: 1728
Posted: 20-Apr-2010 at 1:56pm

Are you using .NET 3.5 or .NET 4.0?

In .NET 3.5, there are differences between what you can do in a C# Lamda and what you can do in a VB.NET Lamda. For example, in a C# Lamda, the Lamda may or may not return a value. In VB.NET, the Lamda MUST return a value. Many of the differences in capability are supposed to be remedied in .NET 4.0.

Here is one link that talks about some of the differences in C# and VB.NET Lamdas in .NET 3.5.

http://msmvps.com/blogs/deborahk/archive/2009/10/11/lambda-expressions-action-delegates.aspx

]]> Tue, 20 Apr 2010 13:56:13 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6553#6553 new user question : Hi No more help?? Thanks!... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6547#6547 Author: iosub
Subject: 1728
Posted: 20-Apr-2010 at 12:16pm

Hi

No more help??

Thanks!

]]> Tue, 20 Apr 2010 12:16:26 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6547#6547 new user question : Yes. all convertes translate... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6539#6539 Author: iosub
Subject: 1728
Posted: 20-Apr-2010 at 10:56am

Yes.

all convertes translate it to

query.ExecuteAsync(Function(op) op.Results.ForEach(Employees.Add))

gives error:

Error 1 Overload resolution failed because no accessible 'ExecuteAsync' can be called with these arguments:
Error 3 Lambda parameter 'op' hides a variable in an enclosing block, a previously defined range variable, or an implicitly declared variable in a

I'm lost :-(

]]> Tue, 20 Apr 2010 10:56:05 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6539#6539 new user question : Have you tried Instant VB? http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6538#6538 Author: davidklitzke
Subject: 1728
Posted: 20-Apr-2010 at 10:36am

Have you tried Instant VB?]]> Tue, 20 Apr 2010 10:36:09 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6538#6538 new user question : Hi already try... none of them... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6537#6537 Author: iosub
Subject: 1728
Posted: 20-Apr-2010 at 10:14am

Hi

already try... none of them converts correctly

I have try with "http://www.developerfusion.com/tools/convert/csharp-to-vb/"

http://www.carlosag.net/Tools/CodeTranslator/

do you know any better?

Thanks!

]]> Tue, 20 Apr 2010 10:14:22 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6537#6537 new user question : Hi, you can find online tools... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6536#6536 Author: ji
Subject: 1728
Posted: 20-Apr-2010 at 10:12am

Hi,

you can find online tools to do the conversion job by searching "convert c# to vb "...

]]> Tue, 20 Apr 2010 10:12:47 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6536#6536 new user question : Hi I'm learning :-) how... http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6533#6533 Author: iosub
Subject: 1728
Posted: 20-Apr-2010 at 8:20am

Hi

I'm learning :-)

how do you convert c#

query.ExecuteAsync(op => op.Results.ForEach(Employees.Add));

to VB.net??

Thanks!

Btw.. any chance to have VB examples??

]]> Tue, 20 Apr 2010 08:20:59 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1728&PID=6533#6533