The collection with type='Pager' already exists.

[isatahiri]

Hello,

I migrated from the 19.1.602.1 to the 19.1.602.13.
Since that when i run the app from VS 2019 i have the following error in ASP :

And the page editors are frozen.
Does that talk to you ?

BR
ISA

[isatahiri]

the detail :
Unchecked runtime.lastError: The message port closed before a response was received.
VM455:6 Uncaught ReferenceError: ASPxClientRoundPanel is not defined
at eval (eval at _aspxRunStartupScriptsCore (DXR.axd?r=1_11,1_63,1_12,1_13,1_14,1_15,1_17,1_41,24_364,24_365,24_366,24_367,24_359,24_362,24_363,24_360,24_361,24_368,1_23,1_8,1_49,1_24,1_33,1_35,1_46,1_32,1_48,1_9-6g_tj:6666), :6:20)
at _aspxRunStartupScriptsCore (DXR.axd?r=1_11,1_63,1_12,1_13,1_14,1_15,1_17,1_41,24_364,24_365,24_366,24_367,24_359,24_362,24_363,24_360,24_361,24_368,1_23,1_8,1_49,1_24,1_33,1_35,1_46,1_32,1_48,1_9-6g_tj:6666)
at _aspxRunStartupScripts (DXR.axd?r=1_11,1_63,1_12,1_13,1_14,1_15,1_17,1_41,24_364,24_365,24_366,24_367,24_359,24_362,24_363,24_360,24_361,24_368,1_23,1_8,1_49,1_24,1_33,1_35,1_46,1_32,1_48,1_9-6g_tj:6639)
at Object.ASPx.FinalizeScriptProcessing (DXR.axd?r=1_11,1_63,1_12,1_13,1_14,1_15,1_17,1_41,24_364,24_365,24_366,24_367,24_359,24_362,24_363,24_360,24_361,24_368,1_23,1_8,1_49,1_24,1_33,1_35,1_46,1_32,1_48,1_9-6g_tj:6633)
at Object.ASPx.OnScriptLoadCallback (DXR.axd?r=1_11,1_63,1_12,1_13,1_14,1_15,1_17,1_41,24_364,24_365,24_366,24_367,24_359,24_362,24_363,24_360,24_361,24_368,1_23,1_8,1_49,1_24,1_33,1_35,1_46,1_32,1_48,1_9-6g_tj:6710)
at HTMLScriptElement.eval (eval at _aspxProcessScripts (DXR.axd?r=1_11,1_63,1_12,1_13,1_14,1_15,1_17,1_41,24_364,24_365,24_366,24_367,24_359,24_362,24_363,24_360,24_361,24_368,1_23,1_8,1_49,1_24,1_33,1_35,1_46,1_32,1_48,1_9-6g_tj:6596), :3:6)

[isatahiri]

I opened a ticket at DX support too : T820548 because it looks a DX issue. Please let me know if it is in your side.

[apobekiaris]

Without repro sample unfortunately I cannot

[isatahiri]

Well I delete all generated dll's run again i do not have the error.

[apobekiaris]

whats a generated dll?

[isatahiri]

I will investigate and let you know

[isatahiri]

in my project i run a batch file which deletes all the generated files. Often i used to have something clean and if needed make it lighter for sharing the project :
c:
cd "C:\Users\isata\Documents\PME Projects\PME_Affaire\PME_Affaire.Module"
rmdir Bin /s /q
mkdir Bin
rmdir obj /s /q
mkdir obj

cd "C:\Users\isata\Documents\PME Projects\PME_Affaire\PME_Affaire.Module.Web"
rmdir Bin /s /q
mkdir Bin
rmdir obj /s /q
mkdir obj

cd "C:\Users\isata\Documents\PME Projects\PME_Affaire\PME_Affaire.Module.Win"
rmdir Bin /s /q
mkdir Bin
rmdir obj /s /q
mkdir obj

cd "C:\Users\isata\Documents\PME Projects\PME_Affaire\PME_Affaire.Web"
rmdir Bin /s /q
mkdir Bin
rmdir obj /s /q
mkdir obj

cd "C:\Users\isata\Documents\PME Projects\PME_Affaire\PME_Affaire.Win"
rmdir Bin /s /q
mkdir Bin
rmdir obj /s /q
mkdir obj

cd "C:\Users\isata\Documents\PME Projects\PME_Affaire\SnapModule"
rmdir Bin /s /q
mkdir Bin
rmdir obj /s /q
mkdir obj

pause

[isatahiri]

After running this it works

[apobekiaris]

so it is now fixed or what?

[isatahiri]

Well yes but i always have delete generated files in VS. That's new. But at least it works

[isatahiri]

What does the code : -915408701 means ?

ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenDetailViewCreated(166): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.DetailViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenDetailViewCreated(166): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.DetailViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
ReactiveModule Information: -915408701 : XafApplicationRXExtensions.WhenListViewCreated(183): OnNext((PME_Affaire.Web.PME_AffaireAspNetApplication, DevExpress.ExpressApp.ListViewCreatedEventArgs))
04.10.19 00:14:34.881 cswlmy4rllhbjwf2p32sqa11 Action 'New' done

[apobekiaris]

provide more info how this log is generated

[isatahiri]

I do not have more. I can send you the project...

[isatahiri]

Actually yes it was at the very beginning.
My default.aspx starts with :
<%@ Page Language="C#" AutoEventWireup="true" Inherits="Default" EnableViewState="false" ValidateRequest="false" CodeBehind="Default.aspx.cs" Async="true" %>

Trace.txt
. Again a asynchronous issue :

[isatahiri]

I think i saw in one ticket that i should remove the system.reactive and use only Xpand.XAF.Modules.Reactive. Right ?

[apobekiaris]

the number is unsuable info just a hashcode
https://github.com/eXpandFramework/DevExpress.XAF/blob/b8536326589269000a9d5fd98ca907e3265bc134/src/Modules/Reactive/Extensions/TraceExtensions.cs#L140

the async=true is not a requirement anymore

Type: InvalidOperationException
Message: Impossible de démarrer une opération asynchrone pour le moment. Les opérations asynchrones peuvent être démarrées uniquement depuis un gestionnaire ou un module asynchrone, ou lors de certains événements du cycle de vie de la page. Si cette exception a été levée durant l'exécution d'une page, vérifiez que celle-ci est marquée de la façon suivante : <%@ Page Async="true" %>. Cette exception peut aussi indiquer une tentative d'appeler une méthode « async void », qui n'est pas généralement pris en charge au sein de traitement d'une demande ASP.NET. À la place, la méthode asynchrone doit retourner une tâche, et l'appelant doit l'attendre.
Data: 0 entries
Stack trace:

this is a missleading message without debugging cannot say much

[apobekiaris]

System.Reactive throws like IEnumerable so it is not possible to tell from the stack what happen before. I have deveoped a logger for this purpose

https://github.com/eXpandFramework/DevExpress.XAF/tree/master/src/Modules/Reactive.Logger

[isatahiri]

I just sent you a link by email to my project.

[isatahiri]

I will use the Reactive.Logger asap. Sorry i did not see it.

[isatahiri]

Please let me know if you can download it so i remove the link.

[apobekiaris]

got it

[apobekiaris]

I can repro the problem however I did not found a solution as I did not debug further. What I did is removed ALL 3rd party refrences and code and the problem continue. If I was u I will continue removing stuff until I find the cause of the error. If you need my remove all copy of your solution let me know

[apobekiaris]

note that the log is clear og eny exceptions

[apobekiaris]

i also recommend u switch to nuget packagesreference format cause I found many dependecies that are not used and nuget can successfully remove this support weight

[isatahiri]

If I was u I will continue removing stuff until I find the cause of the error.

What do you mean ? Do you suspect that the issue is not coming from the Framework ?
You can keep the last solution and remove old copies as it is moving fast.

note that the log is clear og eny exceptions

I'm not sure what it means

Using nuget packagereference instead

Last time i tried i had many version depedencies issue so i gave up. Maybe i should try again

[apobekiaris]

I will try to be more clear. I remove all Xpand references and also all other references except Devexpress and then run the web app and got the same exception, so I assume it is something else. I also checked the log when references removed and no exception found there

Continuing to remove parts of your solution will most probably get to the root of the problem.

[apobekiaris]

and as this solution is not so large I would start the opposite way, that is from a blank empty solution where I would paste the BO objects (commenting a few attributes or even better rewriting them dynamically so I could repeat this operation in the future if necessary). Then paste the few controllers and run without 3rd part libs and finally start to register the 3rd part modules. This way (having a clear/decoupled system you will be able to track down any problem fast at any time without even understand the root u will be able to blame something. It is a common way to resolve problems. Automatically generated coded does not help as it is time consuming to remove it, if u see Xpand does not use designers nowhere, it registers controllers. modules etc in code so by commenting them out I am able to track the problem if I do not understand it.

[isatahiri]

I did remove all references, empty the unused Nuget Packages one by one. And the error was still there. So I had a solution consuming only devexpress assemblies and the error was still there.
Then by curiosity i tried in a seconf browser and it worked. So i deleted cash from Chrome and now it works.

At the end i do not know that causes this. I will add Expand and see. By the way, when do you expect the Excel Module as standalone ?

[apobekiaris]

tried some time ago but there are many dependecies to system which need to carefully packaged out so I cannot estimate

[isatahiri]

OK thanks for the info Tolis !

[isatahiri]

OK, i could not find the source of the error but I really suspect that all dependencies as you said were causing this.

Now i would like to use ExcelImporter in one of my project without installing Expand via PowerShell. From nuget would that be enough ?

[apobekiaris]

of course

[isatahiri]

so i add then, manually add the module in each module classes. Nothing else for Excel Importer is needed as the nuget will bring its own dependencies ? Sorry for dummy questions ! Better ask than do mistakes :-)

[apobekiaris]

yes feel free to ask, nuget have all the dependencies u need, using the packagerefrence format all dependecies for the excelimporter will be handled as one unless u excplicity install packages

[isatahiri]

Great ! Thanks Tolis !

[isatahiri]

I tried but now it take the new version. Is it too early for the 604, shoud i wait a bit ?

[isatahiri]

stack :
Unable to resolve dependency 'akarnokd.reactive_extensions'. Source(s) used: 'nuget.org', 'DevExpress 19.1 Local', 'Microsoft Visual Studio Offline Packages'.

[apobekiaris]

no 604 is online does the same problem exists on an empty xaf solution

[isatahiri]

same error on new empty xaf solution

[isatahiri]

[apobekiaris]

i ll have a look in a bit and let u know
thats a prelease depenency I thought nuget allowed such packages but maybe I am worng

[expand]

The DevExpress.XAF repository includes commits that relate to this task:

• Remove akarnokd.reactive_extensions #564 #571

Please update the related Nuget packages and test if issues is addressed. These are nightly nuget packages available only from our NugetServer.

If you do not use the Xpand.XAF.Modules directly but through a module of the main eXpandFramework project, please wait for the bot to notify you again when integration is finished or update the related packages manually.

Thanks a lot for your contribution.

[isatahiri]

just for info, it seems that different version of MonoCecil are used in excelimporter. Nugets proposes to consolidate :

[isatahiri]

After installing, on the first run, i had the same issue as last time. But after clearing the cash on chrome. it worked.

On more think : the Expand.Persistent.baseimpl is set to copy local = true in my module.web but it is not being copyied in the release folder the the web module. I have to copy it manually.

Beside this its working fine again :-)

[apobekiaris]

On more think : the Expand.Persistent.baseimpl is set to copy local = true

this is enviromental issue on your side u can however add a post-build event to copy on each build

[expand]

eXpand.lab release 19.1.604.2 includes commit that relate to this task:

• Bump Mono.Cecil to 0.11.0 #564

Please test if it addresses the problem. If you use nuget add our LAB NugetServer as a nuget package source in VS.

Thanks a lot for your contribution.

[apobekiaris]

see #661