54,574 questions with Developer technologies-related tags

Sort by: Updated
2 answers

Build and run Maui app from dotnet cli on mac

I have dotnet 10 installed on my mac. Running dotnet --version yields this: 10.0.100-rc.1.25451.107 I have also installed the sdk, but when I run dotnet build -t:Run -f net10.0-ios I get this error: MyMauiApp net10.0-ios failed with 1 error(s) (0.2s) …

Developer technologies | .NET | .NET MAUI
asked Sep 29, 2025, 6:42 PM
Brad Rice 20 Reputation points
commented Oct 15, 2025, 10:23 AM
Michael Le (WICLOUD CORPORATION) 2,990 Reputation points Microsoft External Staff
2 answers

Problem claiming MSDN product keys via VS Pro subscription

I'm getting the below error when trying to claim any product keys from my.visualstudio.com: We are sorry, but our system has detected a problem with your account. If you are still getting this error message after 24 hours, please contact support with…

Developer technologies | Visual Studio | Other
Developer technologies | Visual Studio | Other
A family of Microsoft suites of integrated development tools for building applications for Windows, the web, mobile devices and many other platforms. Miscellaneous topics that do not fit into specific categories.
5,516 questions
asked Sep 26, 2024, 3:45 PM
Neil McDonald 35 Reputation points
edited the question Oct 15, 2025, 10:22 AM
Gérard Oomens 110.5K Reputation points Volunteer Moderator
1 answer

KB5066835 update causing IIS Service to not work

Recently my local hosted IIS services is not running after the new update. My visual studio projects also can't be run as well. I have to delete the new update in order to run my projects and local hosted services again. May I know what is the problem?

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.
3,616 questions
asked Oct 15, 2025, 10:06 AM
Sashi Kumar 0 Reputation points
edited an answer Oct 15, 2025, 10:22 AM
Raymond Huynh (WICLOUD CORPORATION) 2,005 Reputation points Microsoft External Staff
1 answer

Call C++ function from C# desktop app

Hello! I have a C++ DLL which functions I need to call in a C# desktop WinForm application. Is there a guide on how to do this? For void Test1() void Test2(int x, double y) CString Test3() CString Test4(double x, double y) double…

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.
11,638 questions
asked Oct 14, 2025, 2:26 PM
Noah Aas 1,090 Reputation points
edited a comment Oct 15, 2025, 10:12 AM
Viorel 124.8K Reputation points
8 answers

Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass'

Hi I've this C# application which opens excel file and updated another excel file. The application developed in Visual studio 2005 and Office 2016. I've recently uninstalled Office 2016 and installed Office 365. Since then " Unable to cast…

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.
11,638 questions
asked Feb 4, 2021, 7:21 AM
Venkata Ramana Nori 36 Reputation points
commented Oct 15, 2025, 10:00 AM
Zakaria Mostafa 0 Reputation points
1 answer

MAUI: Issue with loading pdf and image files in webview handler

I am migrating a Xamarin Forms project to MAUI. I have a custom webview for showing the pdf and image files in Xamarin Forms and I migrated it to a handler in MAUI. But the pdf and images are not visible on the UI in MAUI. When opening the pdf, the page…

Developer technologies | .NET | .NET MAUI
asked Oct 8, 2025, 6:38 AM
Sreenivasan, Sreejith 40 Reputation points
edited an answer Oct 15, 2025, 9:55 AM
Michael Le (WICLOUD CORPORATION) 2,990 Reputation points Microsoft External Staff
1 answer

How to resolve infinite loop issue in Azure AD authentication in Asp.Net MVC application

We have an Asp.Net MVC application running on v4.6.1. We are implementing SSO authentication using Azure AD. We are using Microsoft.Owin.Security.OpenIdConnect library for cookie based authentication. Below is our auth configuration - public void…

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.
3,616 questions
asked Sep 24, 2025, 10:31 AM
Arpit Tandon 0 Reputation points
edited a comment Oct 15, 2025, 9:48 AM
Raymond Huynh (WICLOUD CORPORATION) 2,005 Reputation points Microsoft External Staff
3 answers

Validate eol of each line of the text file

Hi, I used the way below to validate the eol of each line. How to ensure that I have the validation (by it) against each line of the text file?

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.
11,638 questions
asked Oct 8, 2025, 9:45 AM
Peter_1985 2,806 Reputation points
commented Oct 15, 2025, 9:48 AM
Peter_1985 2,806 Reputation points
0 answers

How to fix “Object reference not set to an instance of an object” in C#?

I'm working on a C# application using .NET 8, and I'm getting the following runtime error: System.NullReferenceException: Object reference not set to an instance of an object The error occurs when I try to access a property of an object that should have…

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.
11,638 questions
asked Oct 15, 2025, 9:04 AM
toadf nhyt 0 Reputation points
edited the question Oct 15, 2025, 9:45 AM
toadf nhyt 0 Reputation points
1 answer

.net6 uninstallation has created issue while .net 8 was already present. Application started breaking and was giving 500 error

.net6 uninstallation has created issue while .net 8 was already present in windows server. Application started breaking and was giving 500 error. We need to upgrade our application build on .net6 to .net8. Now in our lower environment we followed below…

Developer technologies | .NET | .NET Runtime
Developer technologies | .NET | .NET Runtime
.NET: Microsoft Technologies based on the .NET software framework. Runtime: An environment required to run apps that aren't compiled to machine language.
1,289 questions
asked Oct 9, 2025, 4:28 PM
Raccoon 0 Reputation points
commented Oct 15, 2025, 9:36 AM
Jack Dang (WICLOUD CORPORATION) 2,365 Reputation points Microsoft External Staff
1 answer

How can I automatically convert Visual Studio .coverage files to XML or Cobertura format for use in CI pipelines?

Hi, I’m working on C++ projects with Visual Studio Enterprise and I can generate .coverage files for code coverage. However, I need to automatically convert these .coverage files to XML (preferably Cobertura) or HTML formats in my CI/CD pipeline, so that…

Developer technologies | C++
Developer technologies | C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
4,014 questions
asked Sep 22, 2025, 12:06 PM
Fatma-3378 0 Reputation points
edited a comment Oct 15, 2025, 9:14 AM
Adiba Khan 810 Reputation points Microsoft External Staff
2 answers One of the answers was accepted by the question author.

Problem with string encoding from Web when showed in VB 2015 or VB 2022 Application.

Hi, Simple question : I use Reverse Geocoding to get info from a GPS Point. I get a Response string ( XML or JSON ) which is always correct in every browser I use. When I use VB Application to build Request String I get some strange Chars in…

Developer technologies | VB
Developer technologies | VB
An object-oriented programming language developed by Microsoft that can be used in .NET.
2,906 questions
asked Oct 10, 2025, 9:34 AM
Marco Gregori 41 Reputation points
accepted Oct 15, 2025, 8:44 AM
Marco Gregori 41 Reputation points
4 answers

i need a .msi file for .Net Runtime 8.0.18

i am deploying multiple laptops to our organization and on random times the laptops requires the installation of .Net Runtime 8.0.18. i would like to create a GPO to install this on multiple computers without the need of an admin password. for that, i…

Developer technologies | .NET | .NET Runtime
Developer technologies | .NET | .NET Runtime
.NET: Microsoft Technologies based on the .NET software framework. Runtime: An environment required to run apps that aren't compiled to machine language.
1,289 questions
asked Jul 16, 2025, 3:42 PM
Shay 0 Reputation points
answered Oct 15, 2025, 7:42 AM
Bruchhardt, A 0 Reputation points
3 answers

What am I doing wrong?? it loads info into the list. only allows one png file for you to see the load

Listinfo.png

Developer technologies | .NET | .NET MAUI
asked Oct 9, 2025, 12:57 PM
Natale J Montalto 0 Reputation points
edited an answer Oct 15, 2025, 6:59 AM
Starry Night 440 Reputation points
2 answers

how to get all the fonts in .net maui?

I want to get all the fonts that is available in the system(phone) and the user can choose as their own desire. how to get it in ios and android?

Developer technologies | .NET | .NET MAUI
asked Oct 14, 2025, 7:28 AM
mc 5,956 Reputation points
answered Oct 15, 2025, 6:46 AM
Starry Night 440 Reputation points
3 answers

What shall I do for making my Xamarin project to be complaint with the new 16KB Google Play Rulec?

We were asked to update our mobile app to be compliant with the new google play rule to support 16kb. However, our app is still on Xamarin and it was end of support last year. To make sure that we are still be able to release new version in the future,…

Developer technologies | .NET | Xamarin
Developer technologies | .NET | Xamarin
A Microsoft framework for building cross-platform mobile apps using .NET and C# with native performance and user interfaces.
5,380 questions
asked Oct 14, 2025, 2:56 PM
Xuan Peng 0 Reputation points
answered Oct 15, 2025, 6:40 AM
Susmitha T (INFOSYS LIMITED) 745 Reputation points Microsoft External Staff
6 answers

How do you use RAG in the REST API with GPT-5?

I have added an Azure Search Service index with the options for semantic configuration and a Vector Profile. When I execute the following REST request. The following error is raised. Does anyone have some insight into this result? [Error Message] An…

Developer technologies | C++
Developer technologies | C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
4,014 questions
asked Sep 28, 2025, 3:55 PM
Ronald Wyman 76 Reputation points
commented Oct 15, 2025, 6:14 AM
Adiba Khan 810 Reputation points Microsoft External Staff
2 answers

Can I use WSL?

Is it allowed to use WSL? I'd like to know if i can develop locally using wsl.

Developer technologies | Visual Studio | Other
Developer technologies | Visual Studio | Other
A family of Microsoft suites of integrated development tools for building applications for Windows, the web, mobile devices and many other platforms. Miscellaneous topics that do not fit into specific categories.
5,516 questions
asked Oct 14, 2025, 9:47 PM
Revanth Gundala 0 Reputation points Microsoft Employee
answered Oct 15, 2025, 6:11 AM
Amelia Adam 0 Reputation points
1 answer

What changes I would need to release Application for Android 16KB in Xamarin.Android?

Hi, in order to meet the "Android 16 KB Memory Page Requirement", is it mandatory to move the app from Xamarin to MAUI or is there any way to do it in Xamarin? Many thanks. Regards.

Developer technologies | .NET | Xamarin
Developer technologies | .NET | Xamarin
A Microsoft framework for building cross-platform mobile apps using .NET and C# with native performance and user interfaces.
5,380 questions
asked Oct 10, 2025, 11:33 AM
Juan Antonio Ortega 5 Reputation points
commented Oct 15, 2025, 6:10 AM
Starry Night 440 Reputation points
1 answer

Format of the initialization string does not conform to specification starting at index 172

Hello, I have successfully published my ASP.NET Core 8.0 API to my hosting account, but I’m getting the following error when trying to access one of the endpoints: Format of the initialization string does not conform to specification starting at index…

Developer technologies | Visual Studio | Setup
asked Oct 3, 2025, 3:58 PM
Aristides Ricardo Fioretti 0 Reputation points
commented Oct 15, 2025, 5:49 AM
Adiba Khan 810 Reputation points Microsoft External Staff