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    pWENSCore
    @pWENSCore
    error http request failed may be internet connection is lost or url is malfunctioned
    this error is occurring randomly, how can we fix it.
    thanks in advance
    2 replies
    gkirk90
    @gkirk90
    Just installed the latest Visual Studio 2022 and the Dotvvm extension fails to load, any idea when a fix will be available?
    Tomáš Herceg
    @tomasherceg
    @gkirk90 We've just published a new version 4.0.537.0 on the marketplace - can you please try it?
    gkirk90
    @gkirk90
    @tomasherceg New version appears to be good :) Thank you!!
    pWENSCore
    @pWENSCore
    at DotVVM.Framework.Hosting.DotvvmPresenter+<ExecuteCommand>d__29.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.DotvvmPresenter+<ExecuteCommand>d__29, DotVVM.Framework, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<ExecuteCommand>d__29 ByRef)
    at DotVVM.Framework.Hosting.DotvvmPresenter.ExecuteCommand(DotVVM.Framework.Runtime.Filters.ActionInfo, DotVVM.Framework.Hosting.IDotvvmRequestContext, System.Collections.Generic.IEnumerable`1<DotVVM.Framework.Runtime.Filters.ICommandActionFilter>)
    at DotVVM.Framework.Hosting.DotvvmPresenter+<ProcessStaticCommandRequest>d__28.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.DotvvmPresenter+<ProcessStaticCommandRequest>d__28, DotVVM.Framework, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<ProcessStaticCommandRequest>d__28 ByRef)
    at DotVVM.Framework.Hosting.DotvvmPresenter.ProcessStaticCommandRequest(DotVVM.Framework.Hosting.IDotvvmRequestContext)
    at DotVVM.Framework.Hosting.DotvvmPresenter+<ProcessRequestCore>d__26.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.DotvvmPresenter+<ProcessRequestCore>d__26, DotVVM.Framework, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<ProcessRequestCore>d__26 ByRef)
    at DotVVM.Framework.Hosting.DotvvmPresenter.ProcessRequestCore(DotVVM.Framework.Hosting.IDotvvmRequestContext)
    at DotVVM.Framework.Hosting.DotvvmPresenter+<ProcessRequest>d__25.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.DotvvmPresenter+<ProcessRequest>d__25, DotVVM.Framework, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<ProcessRequest>d__25 ByRef)
    at DotVVM.Framework.Hosting.DotvvmPresenter.ProcessRequest(DotVVM.Framework.Hosting.IDotvvmRequestContext)
    Feb 17 10:55:40 ip-172-31-38-10 dotnet-example[1134401]:    at DotVVM.Framework.Hosting.Middlewares.DotvvmRoutingMiddleware+<Handle>d__3.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.Middlewares.DotvvmRoutingMiddleware+<Handle>d__3, DotVVM.Framework, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<Handle>d__3 ByRef)
    at DotVVM.Framework.Hosting.Middlewares.DotvvmRoutingMiddleware.Handle(DotVVM.Framework.Hosting.IDotvvmRequestContext)
    at DotVVM.Framework.Hosting.DotvvmMiddleware+<Invoke>d__5.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.DotvvmMiddleware+<Invoke>d__5, DotVVM.Framework.Hosting.AspNetCore, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<Invoke>d__5 ByRef)
    at DotVVM.Framework.Hosting.DotvvmMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext)
    at DotVVM.Framework.Hosting.Middlewares.DotvvmErrorPageMiddleware+<Invoke>d__6.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[DotVVM.Framework.Hosting.Middlewares.DotvvmErrorPageMiddleware+<Invoke>d__6, DotVVM.Framework.Hosting.AspNetCore, Version=3.2.1.0, Culture=neutral, PublicKeyToken=23f3607db32275da]](<Invoke>d__6 ByRef)
    at DotVVM.Framework.Hosting.Middlewares.DotvvmErrorPageMiddleware.Invoke(Microsoft.AspNetCore.Http.HttpContext)
    at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware+<Invoke>d__5.MoveNext()
    at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[[Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware+<Invoke>d__5, Microsoft.AspNetCore.Localization, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]](<Invoke>d__5 ByRef)
    can anyone help me to find this error, thanks in advance
    7 replies
    beatsm
    @beatsm
    Are there any plans to open source the conversation tool?
    11 replies
    beatsm
    @beatsm
    Is the reason for VB.net being supported by the visual studio tooling just the development and support time? Or ate there inherent problems with VB.net tooling in VS?
    1 reply
    pWENSCore
    @pWENSCore
    @viewModel pWENSCore.ViewModels.Common.LabDetailsViewModel, pWENSCore
    @masterPage Views/Site.dotmaster
    @import cx = DotVVM.Framework.Hosting.IDotvvmRequestContext
    
    <dot:Content ID="ContentPlaceHolder1">
        <%--<cc:LoadLabDetails DataContext="{value: labDetailsModel}" PostBack.Update="true" RenderSettings.Mode="Server">
        </cc:LoadLabDetails>--%>
        <dot:Button IsSubmitButton="false" Click="{staticCommand: LabDetailsViewModel.Tester(cx)}"></dot:Button>
    </dot:Content>
    this is my code, I have passed Context as parameter in staticCommand but facing this error
    image.png
    Should it be registered as a service in dotvvmstartup?
    9 replies
    pWENSCore
    @pWENSCore
    dotvvm javascript is not working in windows xp for one of my client, and there is no update for chrome so far, is updating the os is the only way or shall you pls suggest a solution?
    2 replies
    pWENSCore
    @pWENSCore
    diddlys
    @diddlys
    Hello. I am starting to get involved in an ASP.NET Webforms project, and part of my job is to begin a migration plan to .NET Core. The project is small/medium sized but has dependencies on things like DevExpress controls for dashboards, charts, and some other legacy stuff. I like the look of the DotVVM framework for bit by bit migration, but I'm concerned that the visual tools that are currently being used are not available in DotVVM. Is this likely to be a problem, and how easy would it be to replace these things with DotVVM compatible controls - or even create new ones of nothing is available?
    1 reply
    Kit Thomas
    @kitmaxthomas_twitter
    Hello, I just upgraded an OWIN \ Webforms project to dotVVM 4.0.2 (from 3.2.2). It uses the MultilevelMenu control which also needed to be upgraded to ver 4. The only changes I was forced to make was for Attributes, for example, from li.Attributes["class"] = "nav-item dropdown"; to li.Attributes.Set("class", "nav-item dropdown"); I'm getting the following error in the project using the menu control System.MissingMethodExceptionMethod not found: 'System.Collections.Generic.Dictionary2<System.String,System.Object> DotVVM.Framework.Controls.HtmlGenericControl.get_Attributes()'. DotVVM.Framework.Controls.DotvvmControlExceptionUnhandled MissingMethodException occurred in MultilevelMenu.PreRender: Method not found: 'System.Collections.Generic.Dictionary2<System.String,System.Object> DotVVM.Framework.Controls.HtmlGenericControl.get_Attributes()'. Thank you
    4 replies
    Kit Thomas
    @kitmaxthomas_twitter
    image.png
    6 replies
    Kit Thomas
    @kitmaxthomas_twitter
    @tatran_twitter Did you ever get any improvement on the performance of the TreeView control? I'm experiencing the same issue, I can load my entire tree class in a few ms but expanding any of the items takes between 8 and 10 seconds everytime.
    Kit Thomas
    @kitmaxthomas_twitter
    I'm having issues with the TreeView (ver 4). Expanding an item is taking about 10 seconds everytime. I tried the LoadChildren (lazy load) but on the initial expand the LoadChildren method is sent a null item. I used the samples from https://www.dotvvm.com/docs/4.0/controls/businesspack/TreeView (Sample 6: Lazy loading of children) and it does the exact same thing, sends a null TreeItem object, flashes the expanded controls then they disappear. Checking for the null object doesnt fix the issue, just left with an empty treeview. Anyone had any success with the Lazy Load ? Thanks
    2 replies
    MichalOberreiter
    @MichalOberreiter
    error.PNG
    Hi guys, i have trouble with add new DotVVM project from last Visual Studio update. Any ideas?
    Lahiru Tharanga
    @dlltharanga
    I need to access Session from the VB.Net code. I refer following sample project. But it is in C#. https://github.com/riganti/dotvvm-samples-session
    image.png
    Alex Chinchilla
    @Rambu24
    image.png
    Hi, I am Alex from Costa Rica. Since 3 days ago I'm trying to execute my project but it continues showing this error. Is there someone who can help me please ? :( I'm using VS 2022 .Net last version and the latest of DotVVM
    2 replies
    Lahiru Tharanga
    @dlltharanga
    image.png
    This is how I access Sessions from the VB.net code.
    sg-matt
    @sg-matt:matrix.org
    [m]
    Hey all
    Super impressed with he project so far! We are looking into using this to help our transition from WebForms to .NET6. We use a lot of DevExpress controls but the main ones are the GridView and the Scheduler. I see that there is a decent solution for the Grid, but what would be a good solution for the scheduler.
    sg-matt
    @sg-matt:matrix.org
    [m]
    Is that where possibly using something like the Syncfusion React components would help?
    2 replies
    Alex Chinchilla
    @Rambu24
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    Alex Chinchilla
    @Rambu24
    Thank you body. I'm gonna check this. I'll tell you how it goes.
    Alex Chinchilla
    @Rambu24
    Yeah sure!! 👌🏻
    Corentin Chapatte
    @corentinchap
    image.png
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    Hello, I need some guidance from one of you guys, I'm pretty sure It's an easy fix but couldn't find any information about it, I must be missing something.
    I'm trying to create a custom control to show a simple javascript alert.
    I've created the .dotcontrol, code behind file, model file, I registered the control, it compile and shows the output correctly.
    However, the data of the variable passed output "<!-- ko text: $control.Message --><!-- /ko -->" instead of the value of the object property. Any ideas why ?
    1 reply
    Lahiru Tharanga
    @dlltharanga
    How to keep "HttpContext.Current" after first page load ?
    2 replies
    Lahiru Tharanga
    @dlltharanga
    image.png
    Jack Fisher
    @JackkFi5h
    Hello, anyone know how I can go about calling the sort method in a grid from a GridViewTemplateColumn where the header is a <dot:Literal> within the HeaderTemplate? Thanks
    2 replies
    Lahiru Tharanga
    @dlltharanga
    Hi All, I need to get working example of bootstrap Spinner. e.g. when a task start, spinner needs to show and after complete the task, spinner should hide
    2 replies
    Miroslav Adamec
    @mirecad
    Hi, is there a possibility to use some kind of fluent validation on properties of my viewmodel? Something like FluentValidation.AspNetCore. I am aware of ways described in documentation. I dont want to couple my objects in other libraries with UI and ideally not use the AutoMapper way also. What is the correct way to do this ? Thanks!
    2 replies
    MichalOberreiter
    @MichalOberreiter
    Hi, trouble with visual studio 2022 version 17.2.0 and dotvvm extension ... preview version from website doesnt work
    pajapolaskuj
    @pajapolaskuj
    dotvvm_PackageDidNotLoadCorrectly.png
    Hello, having problem with DotVVM extension. Already tried to reinstall VS 2022 Comunity 17.2.0 and removed ComponentModelCache. Any other sugestions? VS 2019 works fine
    pajapolaskuj
    @pajapolaskuj
    It does this for every extension I install. Even in sandbox. Did anyone find solution to this problem? Microsoft said they fixed it in 17.2 but that is clearly not true. Even preview 17.3 does the same thing.
    Andrej Čižmárik
    @acizmarik
    Hi, we just released a new version of extension that is compatible with new versions of Visual Studio. You can check-out information about compatibility here: https://www.dotvvm.com/docs/4.0/pages/dotvvm-for-visual-studio/release-notes. The new versions should be already available on marketplace as well.
    1 reply
    Miroslav Adamec
    @mirecad
    Hello, I am looking at BP GridView export data. Is it possible to include additional column into XLS that is not part of the GridView? Lets say I have loaded IQueryable<User> into GridView. I want to show on page only 2 columns Name and Surname, but my export should contain also Title, MiddleName and other properties. Is this possible? Thanks!