Developer technologies .NET Entity Framework Core

2 answers

How can i convert my .NET Framework 4.8 (x86) to .NET Core 8 (x64)

Dear Team, I have migrated my WinForms application from .NET Framework 4.8 to .NET Core 8. Previously, it was built for the x86 platform, but I want to change it to x64. I have updated the configuration in the Configuration Manager and modified the…

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Drusti Kumar 20

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Varsha Dundigalla(INFOSYS LIMITED) 4,325 Microsoft External Staff

3 answers

Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: The database operation was expected to affect 1 row(s), but actually affected 0 row(s); data may have been modified or deleted since entities were loaded.

I am using DDD architecture and the following code changes the aggregate Root (basically adds a comment which is an Entity to the aggregate Root). public sealed class AddCommentToPostCommandHandlers : ICommandHandler<AddCommentToPostCommand,…

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Arman Espiar 1

answered

Marthin Orellana Maldonado 0

2 answers

.NET entity framework asp.net showing the following react issues ? how to resolve

Hi Everyone (SME), i am facing following 2 issue while building the web pack which is used to run asp.net with react js application i am using node js version 14.21.3 ERROR in ./node_modules/react-draggable/build/cjs/Draggable.js 210:22 ERROR in…

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srinivas999 0

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Gade Harika (INFOSYS LIMITED) 2,335 Microsoft External Staff

3 answers

How does EF core tools find my DbContext from my application to generate migration etc

I asked copilot this question, about how EF Core Tool loads my app dll and execute DI service registrations, including builder.Services.AddDbContext(..), then getting my DbContext from DI. In Minimal API program. It answers this: Got it — you’re asking…

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Chinzorig Batsukh 11

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Chinzorig Batsukh 11

4 answers

Could not load type 'Microsoft.EntityFrameworkCore.Metadata.Internal.AdHocMapper'

I'm using .NET 8.0, Entity FrameworkCore 9.0.2, MySql.EntityFrameworkCore 9.0.0 and when I try to get data from the database I get the following error. How to resolve this problem? System.TypeLoadException: Could not load type…

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Misha Kurytsia 0

answered

can kucukgultekin 330

2 answers

HasDefaultValueSql("getutcdate()").ValueGeneratedOnAdd(); not working as expected

I configure my model as follows: public class CampaignConfiguration : IEntityTypeConfiguration<Campaign> { /// <inheritdoc /> public void Configure(EntityTypeBuilder<Campaign> builder) { builder.HasIndex(new[] {…

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David Thielen 3,226

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Soumyadip Majumder 200

1 answer

Graph API RevokeSignInSessions not invalidating refresh tokens

I am trying to use MS Graph RevokeSignInSessions to invalidate a user's refresh tokens to enforce the user to login when the existing access token expires. I set the lifetime of access token to 5 mins. In my tests, when the request completes…

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Dongyang Li 0

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Surya Amrutha Vaishnavi Lanka (INFOSYS LIMITED) 1,720 Microsoft External Staff

1 answer

what I need to update to win-11 pro?

I wish to upgrade to win-11 pro. My sys: MB, Gigabyte MA785GM-US2H Processor: AMD phenom 11x4 965, 3.40ghz Ram: 4.00 GB, 3.25 GB usable, 800mhz Graphics card: NVIDIA GeForce GT 730 (2 GB) System: 32-bit operating system, x64-based processor Edition:…

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my computer 20

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my computer 20

1 answer

System.InvalidOperationException: 'The LINQ expression => EntityShaperExpression:

var searchs = new List<string> { "a1", "a2", "a3" }; var result = db.Products.Where(p => searchs.Any(s => p.Content.Contains(s))).ToList(); my query like that run ok in asp.net mvc 5 (vs 2019) but when i use vs…

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Tam Luong 20

answered

Kathy Botlar 0

2 answers

Learning EF - Error running Scaffold-DbContext

I am learning how to user Entity Framework where the models are built from an existing SQL server. I ran this command in the package manager: Scaffold-DbContext “Server=xxx; database=Contoso; user id = cnnxxxxx; password = xxxx”…

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Stephen Ng Qui Sang 10

answered

Thomas Brausendorf 0

2 answers

calling stored procedure using entity framework core is throwing error

I am trying to call a stored procedure in my Visual studio application. I am using Entity Framework core. The stored procedure is returning two columns: ID and Type. below is the test result ID Type 1 Basic 2 Test 3 …

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Anjali Agarwal 1,591

accepted

Anjali Agarwal 1,591

5 answers

SQLAzure is not available for your selection of subscription and location

Hi Folks, Trying to use Azure for the first time, I'm using a normal account (i.e not free tier or student) but it is just for a hobby project. I'm following the tutorial here in order to deploy my EFCore webapi…

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Gary Frewin 25

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SÁRA PETRES 0

4 answers

How to use Scaffold-DbContext in .NET Core for Sqlite database

I'm using .NET Core Version 7 and I want to use EF Core to access a Sqlite (*.db3) database file. This file has a password and I want to add the database tables to the project through database first. The scaffold-dbcontext code is as follows, but it…

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Mohammad Hasan Salmaaniyaan 45

edited the question

Mohammad Hasan Salmaaniyaan 45

4 answers

How to filter a query in EF Core using a Value Object (Email value object) and the filter using Contains method?

I'm using C# EF Core version 7. I have a value object called Email which contains a string Value getter property which will hold the email value, and i have entity called Person which have Id and email i have configuered my entity using fluent api as…

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Osama Al-qarutee 0

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Benjamin Painter 0

3 answers

Unable to create a DbContext' Error when Using EF Core in .NET 8 ClassLibrary Project

Hello everyone, I've developed a ClassLibrary project using .NET 8 and C#, and I've utilized EF Core 8 in it. I've defined my own models and context within it. However, when I attempt to use the add-migration command, I encounter this error: "Unable…

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Kamyab Faghih 70

edited a comment

Claudious Neol Manuel 0

1 answer

Cannot Migrate Database

Hello all, I am having issue updating the migration of my database. I am currently using .NET 9.0. I have modified one of my files to include the following: protected override void Up(MigrationBuilder migrationBuilder) { migrationBuilder.UpdateData( …

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PocketPixie 21

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Batool Obeidat 0

1 answer

How to fix data loss in designer?

I've faced similar errors before and also fixed them by restarting my pc. But this time restart shortcut didn't work. In "View.cs" code I just inherited its class by "SamplePanel.cs" instead of "Form". Here's code of…

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Talha Ahmad 0

answered

Devang Prajapati 5

1 answer

Frame work error

I am using VS build task but failing with following error ##[error]C:\Program Files\Microsoft Visual Studio\2022\Enterprise\MSBuild\Current\Bin\Microsoft.Common.CurrentVersion.targets(1259,5): Error MSB3644: The reference assemblies for…

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tarun k 635

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Adiba Khan 1,680 Microsoft External Staff

2 answers

Can I load CLR (.Net 4.72) and the CorCLR(.Net 8) in the same native process?

Given a native process in windows, can it load both the CLR and the coreCLR ? More Details on the scanrio: Given: 1- A native process ConsoleApp1.exe. 2- Managed C++ /CLR dll (.Net 4.72) , myLib1.dll 3- A COM object which is implemented in .Net 8.0 ,…

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Yamin Hijazi 0

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Gade Harika (INFOSYS LIMITED) 2,335 Microsoft External Staff

1 answer

Command prompt core8 windows 8.1 prompt services adb and serial code product properties

Purchased Core8&Windows 8.1 let's get my system up to date and finish leaving Microsoft let's do this without arguments or preventions money was spent and money is to be held up to contract codes of property rights values and anti theft and copyright…

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Diamondsoft 0

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Adiba Khan 1,680 Microsoft External Staff

Developer technologies | .NET | Entity Framework Core

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790 questions with Developer technologies | .NET | Entity Framework Core tags

How can i convert my .NET Framework 4.8 (x86) to .NET Core 8 (x64)

Microsoft.EntityFrameworkCore.DbUpdateConcurrencyException: The database operation was expected to affect 1 row(s), but actually affected 0 row(s); data may have been modified or deleted since entities were loaded.

.NET entity framework asp.net showing the following react issues ? how to resolve

How does EF core tools find my DbContext from my application to generate migration etc

Could not load type 'Microsoft.EntityFrameworkCore.Metadata.Internal.AdHocMapper'

HasDefaultValueSql("getutcdate()").ValueGeneratedOnAdd(); not working as expected

Graph API RevokeSignInSessions not invalidating refresh tokens

what I need to update to win-11 pro?

System.InvalidOperationException: 'The LINQ expression => EntityShaperExpression:

Learning EF - Error running Scaffold-DbContext

calling stored procedure using entity framework core is throwing error

SQLAzure is not available for your selection of subscription and location

How to use Scaffold-DbContext in .NET Core for Sqlite database

How to filter a query in EF Core using a Value Object (Email value object) and the filter using Contains method?

Unable to create a DbContext' Error when Using EF Core in .NET 8 ClassLibrary Project

Cannot Migrate Database

How to fix data loss in designer?

Frame work error

Can I load CLR (.Net 4.72) and the CorCLR(.Net 8) in the same native process?

Command prompt core8 windows 8.1 prompt services adb and serial code product properties