1,689 questions with Developer technologies | .NET | Blazor tags

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Blazor WebAssembly no soporta AES (System.Security.Cryptography) → obliga a usar librerías externas

Actualmente, en Blazor WebAssembly, el uso de System.Security.Cryptography.Aes falla con el error: Algorithm 'Aes' is not supported on this platform. Esto ocurre incluso con configuraciones básicas como: using (Aes aesAlg = Aes.Create()) {     aesAlg.Key…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-12-04T20:01:00.27+00:00
Alberto Reyes Peralta 0 Reputation points
answered 2025-12-04T20:01:11.19+00:00
Q&A Assist
2 answers

Inconsistent persistence behavior in Blazor

I have an SSR MainLayout.razor and a couple other InteractiveServer (SI) components. I need to display messages across tabs and to identify each tab i'm cascading a tabId value from the layout. Since this crosses render mode boundaries, on subsequent…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-11-26T14:16:53.35+00:00
iKingNinja 140 Reputation points
commented 2025-12-04T11:37:02.8866667+00:00
iKingNinja 140 Reputation points
3 answers One of the answers was accepted by the question author.

MapStaticAssets is breaking a background video from playing

I have a rather large Blazor WASM application running on Dot Net 9. The login page has a background video. Everything works well. We are making some significant changes and want to include an upgrade to Dot Net 10. The upgrade results in a…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-11-24T16:07:35.53+00:00
Daniel Cooper 30 Reputation points
accepted 2025-12-03T16:10:04.8466667+00:00
Daniel Cooper 30 Reputation points
3 answers

Blazor Web App partly run code as WASM

I'm trying to create a register account page in Blazor Web App. I need the form submission callback to run on the client as it needs to set the authentication cookie, but I can't manage to achieve this. This is my current component code: @using…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-11-07T17:49:25.3533333+00:00
iKingNinja 140 Reputation points
edited a comment 2025-11-20T22:15:40.14+00:00
Bruce (SqlWork.com) 81,971 Reputation points Volunteer Moderator
2 answers

Why is the blazor css isolation not working?

I have an AppLogin.razor component and its css file is AppLogin.razor.css. They are working fine. I have a UserLogin.razor component and its css file is UserLogin.razor.css. The working mechanism is as follows When you login from the AppLogin.razor…

Developer technologies | .NET | Other
Developer technologies | .NET | Other
Microsoft Technologies based on the .NET software framework. Miscellaneous topics that do not fit into specific categories.
4,149 questions
Developer technologies | ASP.NET | ASP.NET Core
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
Developer technologies | ASP.NET | Other
Developer technologies | ASP.NET | Other
A set of technologies in .NET for building web applications and web services. Miscellaneous topics that do not fit into specific categories.
3,626 questions
Developer technologies | C#
Developer technologies | C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,692 questions
asked 2024-02-25T21:05:38.5766667+00:00
Haneen Al-fakhry 10 Reputation points
answered 2025-11-06T13:48:33.3566667+00:00
Mick Barretto 0 Reputation points
2 answers One of the answers was accepted by the question author.

Best approach for Mobile app development

Hello guys, I was wondering what is the best project template for mobile app development. I was reading little bit about the .NET MAUI but I am not quite sure if it's better than regular Android App or Mobile App (Xamarin). What is your experience with…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
Developer technologies | .NET | .NET MAUI
asked 2024-12-31T12:12:52.3266667+00:00
Kuler Master 406 Reputation points
answered 2025-11-01T00:33:22.0233333+00:00
Graham McKechnie 446 Reputation points
2 answers

Why does cached data disappear when using forceLoad in a Blazor app?

In a Blazor application, cached results are stored using IMemoryCache through a CacheMemory wrapper. When navigating to another page with NavigateTo(forceLoad: true), the destination page does not have access to the cached data. However, when navigating…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-09-30T13:59:18.2166667+00:00
Obakeng Aphane 20 Reputation points
commented 2025-10-13T04:28:12.12+00:00
Danny Nguyen (WICLOUD CORPORATION) 4,985 Reputation points Microsoft External Staff Moderator
4 answers

Blazor Interop for Mozilla pdf.js

Anyone managed to create a JS interop for https://github.com/mozilla/pdf.js I am looking for robust viewer solution to show PDF files. Thank you, D

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2021-07-18T17:16:17.257+00:00
DinoN 1 Reputation point
commented 2025-10-11T18:50:30.3566667+00:00
niico 55 Reputation points
1 answer One of the answers was accepted by the question author.

How to ignore ETag checking and fix this error

I read from and write to blob content in Azure blob storage. File is being changed (new content is getting appended to the file) at the same time while it is being downloaded. I get error in the below stream.Read() line. Which I believe is because of…

Azure Blob Storage
Azure Blob Storage
An Azure service that stores unstructured data in the cloud as blobs.
3,285 questions
Developer technologies | ASP.NET | ASP.NET Core
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
Developer technologies | C#
Developer technologies | C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,692 questions
asked 2023-01-18T12:50:17.69+00:00
Sarah 161 Reputation points
commented 2025-10-11T16:13:29.0266667+00:00
Bruce (SqlWork.com) 81,971 Reputation points Volunteer Moderator
2 answers

Anti Forgery with Blazor Server App

we upgraded our blazor server app from .Net 6 to .Net 8 following the instructions from https://learn.microsoft.com/en-us/aspnet/core/migration/70-80?view=aspnetcore-8.0&tabs=visual-studio Below is the snippet from the Program.cs where…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2024-02-09T16:57:41.2+00:00
Balu Raju 86 Reputation points
commented 2025-10-09T11:53:44.8033333+00:00
Williams, Billy P 0 Reputation points
2 answers One of the answers was accepted by the question author.

Structuring a .NET Core 9 Blazor + API Architecture for Microservices Readiness and Best Practices

Hello, I am working on a wiki-style encyclopedic resource application designed to centralize and organize documentation related to the universe of my fantasy novel. This project is personal and primarily has a pedagogical purpose (training myself on…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-09-04T10:26:11.2466667+00:00
Laurent Guigon 331 Reputation points
accepted 2025-09-30T08:10:03.6633333+00:00
Laurent Guigon 331 Reputation points
1 answer One of the answers was accepted by the question author.

How to differentiate layout for same route in .NET 9 MAUI Blazor Hybrid App?

I'm building a .NET 9 MAUI Blazor Hybrid App and I want to use the same route (@page "/home") in both the shared project and the device-specific project. However, I want the layout and components to be different depending on whether the app is…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-09-29T08:45:28.58+00:00
Obakeng Aphane 20 Reputation points
accepted 2025-09-29T13:33:12.6433333+00:00
Obakeng Aphane 20 Reputation points
2 answers

aspire app giving 431 error

I am getting a 431 error in aspire, but it is working for other my team members. for the newly created aspire app, I am getting the same error. I cleaned the solution cleaned the cookies and all but still nothing worked.

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-09-11T21:48:12.35+00:00
Ghongde,Shivanand 0 Reputation points
commented 2025-09-17T04:05:52.0366667+00:00
Varsha Dundigalla(INFOSYS LIMITED) 3,725 Reputation points Microsoft External Staff
1 answer

Blazor MAUI ios blank screen

Hi, I have created a stock Blazor MAUI project. It can run fine on Windows, Android and Mac. When I try to run it on IOS, it boots and then just displays a blank screen. Is this a known issue? How to fix that? TIA,

Developer technologies | .NET | .NET MAUI
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2022-12-20T12:19:06.837+00:00
AdamZebrowski-4736 1 Reputation point
commented 2025-09-16T06:30:32.79+00:00
Harry Vo (WICLOUD CORPORATION) 3,490 Reputation points Microsoft External Staff Moderator
5 answers

Blazor - Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0

Hi, I have an issue with a Blazor page. Sometimes I receive the following error message on the browser's console view: Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0 This is strange, because this error message…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
Developer technologies | C#
Developer technologies | C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,692 questions
asked 2022-03-29T14:57:37.95+00:00
Gábor Varga 36 Reputation points
answered 2025-09-14T09:49:05.96+00:00
Mohammad Sherafat 0 Reputation points
0 answers

NavMenu not show icons

I create Blazor WebAssembly project in vs 2019. but , None of the icons on the menu are displayed. Who can help me , thanks .

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2022-02-06T16:30:27.03+00:00
929Free 661 Reputation points
commented 2025-09-13T21:56:16.56+00:00
hivindu amaradeva 0 Reputation points
4 answers

Get Absolute URL in Blazor class

Hello, I have a class inside the Services folder. It contains a LogError(Exception ex) method in which I need the absolute URL in order to get the requested page. However, I am unable to access the HttpContext.Request.Url or any other method/extension…

Developer technologies | ASP.NET | Other
Developer technologies | ASP.NET | Other
A set of technologies in .NET for building web applications and web services. Miscellaneous topics that do not fit into specific categories.
3,626 questions
Developer technologies | C#
Developer technologies | C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
11,692 questions
Developer technologies | ASP.NET | ASP.NET Core
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-01-20T14:00:42.1733333+00:00
Kuler Master 406 Reputation points
commented 2025-09-03T06:30:29.0166667+00:00
Danny Nguyen (WICLOUD CORPORATION) 4,985 Reputation points Microsoft External Staff Moderator
1 answer

Blazor Server (.NET 8) redirect fails after login

We have a Blazor Server app (.NET 8) that is hosted on IIS. Users access it by logging into Citrix with their Active Directory credentials, then into the app (with those same credentials). We use ASP.NET Identity to manage login. Both the end-users and…

Windows development | Internet Information Services
Developer technologies | ASP.NET | ASP.NET Core
Windows for business | Windows Server | User experience | Other
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2025-02-05T22:16:40.9766667+00:00
Ryan Anderson 25 Reputation points
commented 2025-08-27T02:29:59.6+00:00
Jack Dang (WICLOUD CORPORATION) 4,780 Reputation points Microsoft External Staff Moderator
1 answer

Data API Builder - Azure Static Web Apps

Trying to understand Data API Builder (DAB) and if its right for my use case. Based off a simple address book example, there is a table "Addresses" that would have columns: User (the user of the address book, likely an ID linked from a User…

Azure Static Web Apps
Azure Static Web Apps
An Azure service that provides streamlined full-stack web app development.
1,295 questions
Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2024-10-31T00:28:08.82+00:00
JohnM 25 Reputation points
answered 2025-08-26T09:54:30.4033333+00:00
Srikanth Reddy Bandi 260 Reputation points Microsoft External Staff Moderator
1 answer

Blazor two-way binding

I have a Blazor webassembly client. I want to bind a property to a checkbox type input field via a model class. Model: public class Filter { public bool Selected { get; set; } public ItemType ItemType { get; } public Filter(ItemType…

Developer technologies | .NET | Blazor
Developer technologies | .NET | Blazor
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
1,689 questions
asked 2021-06-18T06:34:36.067+00:00
Bence Mihucza 1 Reputation point
answered 2025-08-21T10:09:55.5+00:00
Anonymous