if two tasks get completed at the same time the what happens in WhenAny
hi, IEnumerable<Task<int>> downloadTasksQuery = from url in s_urlList select ProcessUrlAsync(url, s_client); List<Task<int>> downloadTasks = downloadTasksQuery.ToList(); Task<int> finishedTask = await…
Developer technologies | ASP.NET | ASP.NET Core

crc643f46942d9dd1fff9.FormsAppCompatActivity.n_onStart java.lang.IllegalStateException
need help. I don't know why my app isn't working or force close. I use Xamarin.Forms 5.0.0.2012 with the following error: crc643f46942d9dd1fff9.FormsAppCompatActivity.n_onStart java.lang.IllegalStateException Stack trace: Type…
Developer technologies | .NET | Xamarin
how to fix .net 9.0 maui app when using a sqlite local database
I have a maui app using sqlite database as local database created with DB Browser tool and populate the data using the same tool. Everything works fine with Windows but switching to android emulator is not returning the records. What is really strange is…
Developer technologies | .NET | .NET MAUI
How do I resolve the following Exception...?
Exception thrown at 0x00007FFA4A457F9A (KernelBase.dll) in App.exe: WinRT originate error - 0x8000FFFF : 'WindowsXamlManager and DesktopWindowXamlSource are supported for apps targeting Windows version 10.0.18226.0 and later. Please check either the…
Developer technologies | C++
PowerBIClient: 403 Forbidden error unless preferClientRouting=true is used
PowerBIClient: 403 Forbidden error unless preferClientRouting=true is used - Request #422710 R. Aaron La Mar Omari Holtz Description We are experiencing an issue when making API calls with PowerBIClient in C#. In some cases, the request fails with: …
Developer technologies | C#

How to fix this error "warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3] Failed to determine the https port for redirect."
Good evening , I am trying to build a simple web api using ASP.Net . The app has been showing the error like this after building it - warn: Microsoft.AspNetCore.HttpsPolicy.HttpsRedirectionMiddleware[3] Failed to determine the https port for…
Developer technologies | ASP.NET | ASP.NET Core
MAUI connection to SQL Server throws an exception message
Microsoft.Data.SqlClient.SqlException (0x80131904): 已成功与服务器建立连接,但是在登录前的握手期间发生错误。 (provider: TCP 提供程序, error: 35 - 捕获内部异常) ---> System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception. --->…
Developer technologies | .NET | .NET MAUI

Why aren't platform helpers like IConnectivity and ILauncher included in the service collection by default?
Xamarin Essentials was merged into the .NET MAUI packages with the migration, which felt like a great improvement for discovery and QoL. The move to MAUI also saw the introduction of interfaces to support usage of these helpers in IoC scenarios,…
Developer technologies | .NET | .NET MAUI


Lingering table and column references in Blazor
To put it in the words of TeX, I'm stymied... I have a model class (called UserAccount), in which I defined a property/column called FirstLogin. Being a sloppy typist, when I typed the Column attribute, I typed [Column("firstr_login")]. I…
Developer technologies | ASP.NET | ASP.NET Core
When we will update on the next version of MVC5.3.0 if there is no updates on the version please provide documentation for that.
Hi please provide the relavent info regarding the ASP.NET MVC 5.3.0 is there any updated on version if not please provide the documentation. Regards vinayak
Developer technologies | ASP.NET | ASP.NET API
Developer technologies | ASP.NET | Other
VS 2022: Couldn't install Microsoft.VisualCpp.Redist.14
I wanted to install Desktop Development C++, but during installing, I get the error: "Couldn't install Microsoft.VisualCpp.Redist.14". I tried to repair, launched install and uninstall repair tools, worked with registry, uninstall Microsoft…
Developer technologies | Visual Studio | Setup
how cancel token work in these cases
following code is from https://learn.microsoft.com/en-us/dotnet/csharp/asynchronous-programming/cancel-an-async-task-or-a-list-of-tasks i could not understand when it will show following two messages from last main code. Console.WriteLine("Download…
Developer technologies | ASP.NET | ASP.NET Core
The correct CChildFrame is not activated after the predecessor is closed.
MFC MDI application. Opened several CChildFrame s. (To illustrate better my issue I identified every CChildFrame with an unique id.) Opened, lets say, 5 CChildFrame. 1, 2, 3, 4, 5. List the order of the CChildFrame by menu: About: List…
Developer technologies | C++
DLL file not found when invoking function from Excel/VBA
I'm running Windows 11 with 64-bit MS/Office 2021. I have a very large (>25KSLOC) Excel/VBA application with a helper DLL written in C and compiled by Visual Studio 2022. The last time I used the app was May 4, 2025, and it worked perfectly. Today,…
Developer technologies | Visual Basic for Applications
Unable to get the product Key for VS 2022 in my subscription
I am not able to locate the product key for VS 2022 in my subscription. It shows Visual Studio Dev Essentials 2022 - Custom Key This product is offered to this subscription level as a trial license only. If you have purchased this product at retail…
Developer technologies | Visual Studio | Setup
How can I install a ACE blueprint
Hi I need some help with installing a ACE blueprint on my Azure account. Can you provide guidance as to how to do this? Many thanks
Developer technologies | Windows Presentation Foundation
APT2144 invalid file path
VS 2022 Preview... Trying to build and run "Notes" tutorial getting 2 APT2144 invalid file path error in file Xamarin.Android.Aapt2.targets. Error message gives a file path, which I can find using File Explorer. Help on error message says it…
Developer technologies | .NET | .NET MAUI
Error APT 2144 in Android.NET Upgrade
I am upgrading a long-term Android.Xamarin project to an Android.NET project and trying to build the new .NET project in VS 2022. When building the app in Debug or Release mode I get the following error: APT 2144 invalid file path 'E:\Android…
Developer technologies | Visual Studio | Debugging
.NET Framework 4.8 on Windows Server 2019 - installation failes
I have tried the solutions in other questions regarding installation failures of .NET Framework 4.8, but nothing have helped me so far. The server is fully patched and rebooted. (Note! We use a WSUS but I do not know what updates are allowed or…
Developer technologies | .NET | .NET Runtime
Please fix the following issues to continue: We encountered an unexpected error. Please try again later. If this issue continues, please contact site support.
i am getting this error when working with this forum post : https://learn.microsoft.com/en-us/answers/questions/1471083/the-type-or-namespace-name-linq-does-not-exist-in thanks for any help