1,683 questions
1,683 questions with Developer technologies | .NET | Blazor tags
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 | C#
11,628 questions
asked 2022-03-29T14:57:37.95+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(252.8, 96%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGB%3C/text%3E%3C/svg%3E)
Gábor Varga
36
Reputation points
answered 2025-09-14T09:49:05.96+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(144, 69%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMS%3C/text%3E%3C/svg%3E)
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
1,683 questions
asked 2022-02-06T16:30:27.03+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(38.4, 91%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3E9%3C/text%3E%3C/svg%3E)
929Free
641
Reputation points
commented 2025-09-13T21:56:16.56+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(249.60000000000002, 76%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHA%3C/text%3E%3C/svg%3E)
hivindu amaradeva
0
Reputation points
1 answer
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
1,683 questions
asked 2025-09-11T21:48:12.35+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(115.19999999999999, 62%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGS%3C/text%3E%3C/svg%3E)
Ghongde,Shivanand
0
Reputation points
commented 2025-09-12T11:18:58.1933333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(163.2, 69%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVD%3C/text%3E%3C/svg%3E)
Varsha Dundigalla(INFOSYS LIMITED)
1,740
Reputation points Microsoft External Staff
2 answers
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
1,683 questions
asked 2025-09-04T10:26:11.2466667+00:00
Laurent Guigon
311
Reputation points
edited a comment 2025-09-11T15:06:22.5333333+00:00
Laurent Guigon
311
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 | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
Developer technologies | ASP.NET | Other
3,612 questions
Developer technologies | C#
11,628 questions
asked 2025-01-20T14:00:42.1733333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(131.20000000000002, 77%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKM%3C/text%3E%3C/svg%3E)
Kuler Master
406
Reputation points
commented 2025-09-03T06:30:29.0166667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(262.40000000000003, 49%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDN%3C/text%3E%3C/svg%3E)
Danny Nguyen (WICLOUD CORPORATION)
1,440
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 | Blazor
1,683 questions
Developer technologies | .NET | .NET MAUI
4,067 questions
asked 2022-12-20T12:19:06.837+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 34%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA4%3C/text%3E%3C/svg%3E)
AdamZebrowski-4736
1
Reputation point
commented 2025-09-01T16:28:58.9133333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(144, 76%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAN%3C/text%3E%3C/svg%3E)
Ahmad Nawaz
0
Reputation points
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
1,799 questions
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
Windows for business | Windows Server | User experience | Other
20,259 questions
asked 2025-02-05T22:16:40.9766667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(284.8, 31%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERA%3C/text%3E%3C/svg%3E)
Ryan Anderson
25
Reputation points
commented 2025-08-27T02:29:59.6+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(201.6, 1%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJD%3C/text%3E%3C/svg%3E)
Jack Dang (WICLOUD CORPORATION)
1,355
Reputation points Microsoft External Staff
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…
Developer technologies | .NET | Blazor
1,683 questions
Azure Static Web Apps
Azure Static Web Apps
An Azure service that provides streamlined full-stack web app development.
1,239 questions
asked 2024-10-31T00:28:08.82+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(131.20000000000002, 16%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJ%3C/text%3E%3C/svg%3E)
JohnM
25
Reputation points
answered 2025-08-26T09:54:30.4033333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(6.4, 59%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESR%3C/text%3E%3C/svg%3E)
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
1,683 questions
asked 2021-06-18T06:34:36.067+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 11%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBM%3C/text%3E%3C/svg%3E)
Bence Mihucza
1
Reputation point
answered 2025-08-21T10:09:55.5+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(198.4, 72%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMS%3C/text%3E%3C/svg%3E)
Mahendra Singh
0
Reputation points
5 answers
New to Blazor - A valid antiforgery token was not provided with the request.
Hi all, Can any body please give me an advice so I can move forward to the main page, why I'm getting "A valid antiforgery token was not provided with the request. Add an antiforgery token, or disable antiforgery validation for this endpoint."…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
asked 2025-01-25T18:30:51.9566667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(150.4, 70%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ED%3C/text%3E%3C/svg%3E)
Dondon510
261
Reputation points
commented 2025-08-18T10:58:26.37+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(0, 98%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERH%3C/text%3E%3C/svg%3E)
Raymond Huynh (WICLOUD CORPORATION)
825
Reputation points Microsoft External Staff
1 answer
One of the answers was accepted by the question author.
Why is OnInitializedAsync() called twice on a page reload
Hi all; Normally when a page is being created & rendered in Blazor version 8, RenderMode.InteractiveServer, OnInitializedAsync() is called once. But when I do a Reload on Chrome, it is called twice. And all child components in the page are called…
Developer technologies | .NET | Blazor
1,683 questions
asked 2024-03-17T23:34:40.2933333+00:00
David Thielen
3,211
Reputation points
commented 2025-08-16T20:28:30.1033333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
Bruce (SqlWork.com)
80,091
Reputation points
Volunteer Moderator
1 answer
Blazor WebAssembly (.NET 8) - AuthenticationService.init JSInterop Error and Debugger Protocol Issues
I'm working on a Blazor WebAssembly solution targeting .NET 8, with both client and server projects. The client uses MSAL authentication (Microsoft.AspNetCore.Components.WebAssembly.Authentication and Microsoft.Authentication.WebAssembly.Msal). I'm…
Developer technologies | .NET | Blazor
1,683 questions
asked 2025-08-13T12:41:42.7666667+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(201.6, 6%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELA%3C/text%3E%3C/svg%3E)
Luke Abraham
0
Reputation points
answered 2025-08-16T15:52:40.27+00:00
Bruce (SqlWork.com)
80,091
Reputation points
Volunteer Moderator
3 answers
I can't find the Blazor Web Assembly option, I only see two options the Blazor Web App and the standalone Web Assembly application but none of them give me the ASP .NET Core Hosted option, why?
I do have a question related to this topic because I want to start a project with the Blazor WebAssembly App template but it is no longer only those two that you mention. according to a video it should look like this: I would like to know if the way I…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
Developer technologies | C#
11,628 questions
asked 2025-01-20T17:12:21.9833333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(144, 44%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECE%3C/text%3E%3C/svg%3E)
Carlos Enrique Canales L�pez
0
Reputation points
commented 2025-08-13T07:44:20.5933333+00:00
Raymond Huynh (WICLOUD CORPORATION)
825
Reputation points Microsoft External Staff
3 answers
Making a Blazor WebAssembly E-commerce Application Responsive with Flexbox
A Blazor WebAssembly e-commerce application has been built, but the design looks good only on a 23-inch 1920x1080 laptop. The layout includes a header, a left navigation menu, and a footer that is consistent across all pages. The goal is to make this…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
asked 2024-12-31T08:20:29.7566667+00:00
Cenk
1,036
Reputation points
commented 2025-08-13T03:59:18.4233333+00:00
Raymond Huynh (WICLOUD CORPORATION)
825
Reputation points Microsoft External Staff
3 answers
Blazor ValidationMessage being conditional
Hello, I have a registration form where the users can select if they are private or company. What I need is to make the Company Name validation conditional. Meaning, if they select a company it gets enabled and if they select a private it gets disabled.…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
Developer technologies | ASP.NET | Other
3,612 questions
asked 2024-12-03T11:08:10.6566667+00:00
Kuler Master
406
Reputation points
commented 2025-08-13T03:50:08.4233333+00:00
Raymond Huynh (WICLOUD CORPORATION)
825
Reputation points Microsoft External Staff
5 answers
Blazor and ValidationGroups
I am in ASP.NET since the first version of .NET Framework and I am used to some features that are missing now. Please notice that I've just recently moved to Blazor. Currently, I am wondering why the ValidationGroups are not part of it. I have a kind…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
Developer technologies | ASP.NET | Other
3,612 questions
asked 2025-01-04T13:22:46.66+00:00
Kuler Master
406
Reputation points
commented 2025-08-11T08:54:13.3933333+00:00
Jack Dang (WICLOUD CORPORATION)
1,355
Reputation points Microsoft External Staff
1 answer
Set default culture
Hello guys, I am using Microsoft.Extensions.Localization (8.0.11) but for some reason the following code does not work as expected. As you see, I expect the German to be default language but it's always English. Am I missing something? var…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
asked 2025-02-07T10:08:15.3666667+00:00
Kuler Master
406
Reputation points
commented 2025-08-11T08:45:23.3233333+00:00
Jack Dang (WICLOUD CORPORATION)
1,355
Reputation points Microsoft External Staff
5 answers
Multiple App.Razor components
Hello, Is it possible to have an additional App.razor file that I can use for e.g. Admin area only? Currently, if I create a new folder named Admin and create a new layout there, it inherits from the existing App.razor and linked css files. Basically, I…
Developer technologies | ASP.NET | ASP.NET Core
4,842 questions
Developer technologies | .NET | Blazor
1,683 questions
Developer technologies | ASP.NET | Other
3,612 questions
asked 2025-01-31T08:47:54.43+00:00
Kuler Master
406
Reputation points
commented 2025-08-11T07:44:39.7666667+00:00
Jack Dang (WICLOUD CORPORATION)
1,355
Reputation points Microsoft External Staff
1 answer
Getting a System.ObjectDisposedException: The CancellationTokenSource has been disposed in .NET 8
I'm working on a new Blazor app, with server-side and WebAssembly projects in the VS solution. When I debug the app I get a, "Unhandled exception has occurred" message in the bottom of the page. Looking at my event viewer I see this, which…
Developer technologies | .NET | Blazor
1,683 questions
asked 2025-08-06T21:52:54.0233333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 35%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFR%3C/text%3E%3C/svg%3E)
Falanga, Rod, DOH
290
Reputation points
edited an answer 2025-08-11T00:01:03.0733333+00:00
Bruce (SqlWork.com)
80,091
Reputation points
Volunteer Moderator
2 answers
How can I host a shared Blazor Custom Elements app on a different Domain?
I tried to publish a Blazor app with custom elements on a Static Web App and reference it from another deployed app. Just added the necessary script tags pointing to the static web app. It does not work. Looking into the blazor.webassembly.js…
Developer technologies | .NET | Blazor
1,683 questions
Azure Static Web Apps
Azure Static Web Apps
An Azure service that provides streamlined full-stack web app development.
1,239 questions
asked 2023-03-27T18:06:00.6133333+00:00
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(227.2, 13%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELS%3C/text%3E%3C/svg%3E)
László Tóth
0
Reputation points
commented 2025-08-06T16:13:30.65+00:00
Bruce (SqlWork.com)
80,091
Reputation points
Volunteer Moderator