Use this tag for questions specifically related to version 7.0 of the .NET platform. For questions on .NET Framework generally, use the .net tag.
Questions tagged [.net-7.0]
1169 questions
3
votes
0 answers
EFCore 7 TPC Strategy with abstract User class
I'm working on a university management web app that I'm trying to make for a school project. Currently I have 3 classes in my project as follows:
public abstract class User : IdentityUser
{
public string FirstName { get; set; }
…
lightofpast
- 71
- 2
3
votes
2 answers
Is there something similar to NotNullIfNotNullAttribute for IEnumerable return values?
(This is a question about C# nullable reference types and generics.)
I know that I can use NotNullIfNotNullAttribute to specify that the return value of my method may be null if, and only if, an input is null:
[return:…
Heinzi
- 167,459
- 57
- 363
- 519
3
votes
2 answers
Downloading file from Azure blob storage via Memory Stream
I currently have an endpoint in my .net 7 API that when hit, should download a specific file from my blob storage by using the file name. When I test out the endpoint I get a 500 error stating
"Time outs are not supported in this stream". I have…
svalaie
- 73
- 7
3
votes
1 answer
ASP.NET Core 7 MVC project Area folder empty
I just created an ASP.NET Core 7 MVC web project with local identity in Visual Studio 2022. Once I have done the migration of the database, now I can register/login, but I am surprised I can not find identity related code files in directory…
SJj
- 31
- 4
3
votes
1 answer
.NET - What's the point of the JsonNode GetPath() method?
I'm using the System.Text.Json package to work with/manipulate JSON and I've got a niche scenario where I can potentially reuse a method if I can provide it with a path to access the value of a node.
I noticed the JsonNode class has a GetPath()…
chemistrytocode
- 49
- 3
3
votes
1 answer
Bug with IndexOf in .NET 7.0 with non-spacing characters?
I'm seeing a weird issue with .NET 7 with the string APIs IndexOf and Contains. I'm using C#. To repro:
("Foo" + (char)1618).Contains("Foo") returns true .... yet
("Foo" + (char)1618).IndexOf("Foo") returns -1
1618 is a non-spacing Unicode…
Dan
- 55
- 2
3
votes
2 answers
Project EF Core 7 result to named tuple
I'm using EF Core 7. I want to perform server evaluation and project to a named tuple.
I tried:
var products = await _context.Products.Select(x => (x.Id, x.Name)).ToListAsync();
Which gives:
An expression tree may not contain a tuple literal.
I…
lonix
- 14,255
- 23
- 85
- 176
3
votes
1 answer
.NET Core 7 Minimal API MediatR IRequest Handler mapping error
I am currently getting the following error when executing a command via .NET Core 7 Minimal API:
Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
An unhandled exception has occurred while executing the request.
…
dmeadley
- 77
- 5
3
votes
1 answer
How to recreate or refresh an access token for database connections in Azure functions?
I am trying to use an Entity Framework database context for use with managed identity credentials in an Azure function. I have been able to establish a database connection. The issue is that I am not able to keep the database connection established…
secretply
- 55
- 6
3
votes
2 answers
Why is Group By translating in Order By by Entity Framework?
I am using Entity Framework in .NET 7.
I have 3 entities:
Course that contains a ProfessorId among other things
Grade that has a CourseId among other things
Professor
I want to get all the courses that are assigned to a professor and have at least…
StyleM
- 138
- 1
- 5
3
votes
2 answers
'Type' cannot satisfy the 'new()' constraint on parameter 'TParam' because 'Type' has required members
I have this class structure (simplified):
public class InducingMedium
{
public required string File { get; set; }
}
public class InducingVideo : InducingMedium {}
public class InducingAudio : InducingMedium {}
Now, I want to generically…
Mr Patience
- 1,564
- 16
- 30
3
votes
1 answer
How to set up a .NET 7 C# rate limiter per user if the user id is stored ONLY in the entity in the request body?
There is an API that accepts an entity with a previously unknown ID. I need to configure the rate limiter so that entities with the same ID get into the queue. I figured out how to create a window and a queue. How to make a separate queue for each…
Ivan Talion
- 33
- 4
3
votes
1 answer
Is it possible to run .NET Framework WPF application with .NET 7? (Windows 10)
I'm working on a WPF project that targets .NET Framework 4.8
1/
Now I'm researching about running that application with .NET 7 but is it possible to do that?
For example, I tried dotnet wpf.exe but it shown some errors
A fatal error was encountered.…
IFZR
- 316
- 1
- 12
3
votes
1 answer
Open Telemetry with .Net 7 minimal api - AttachLogsToActivityEvent not working with 'IncludeFormattedMessage'
I am using 'OpenTelemetry.Contrib.Preview' package to attach ILogger standalone logs as Activity Events (aka Trace events) to co-relate the logs with trace & show at a single place like Jaeger. As part of the documentation if we want to attach the…
SanjayD
- 156
- 4
- 12
3
votes
1 answer
Why does the onclick event not work, in my razor pages hosted blazor component, in .net 7.0?
This code has been working just right in a blazor web assembly, embedded in a razor pages page, using .net 5.0 and .net 6.0.
I had to upgrade to .net 7.0, by altering the framework in razor pages and blazor projects' properties, to fix a big…
sanepete
- 979
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