从EF Core 9.0 开始,如果模型与上次迁移相比有未决的更改,当调用 dotnet ef database update、Migrate 或MigrateAsync 时,将引发异常。上下文“DbContext”的模型具有挂起的更改。 在更新数据库之前添加新的迁移。 通过将事件 ID“RelationalEventId.PendingModelChanges
However, EF Core 8.0.2 introduces an EF.Constant method which forces EF to use a constant even if a parameter would be used by default. For example:C# Копирај async Task<List<Post>> GetPostsForceConstant(int id) => await context.Posts .Where(e => e.Title == ".NET ...
开发工具:Visual Studio 2019+,C#语言,.NET6+EFCore 数据库支持:SqlServer 2012+ / MySql5.7.34 / Oracle 11g 一、CSFramework.EF数据库框架简介 CSFramework.EF是C/S框架网最新发布的轻量级数据库框架,基于Entity Framework 实体框架搭建,提供大量通用类库助力您快速开发软件项目。 CSFramework.EF支持三种常用数...
The interceptor has both sync and async methods. This can be useful if you need to perform async I/O, such as writing to an audit server. The interceptor allows SaveChanges to be skipped using the InterceptionResult mechanism common to all interceptors. The downside of interceptors i...
问EF核心中的AddAsync() vs Add()EN诶，一言难尽的苦楚啊。昨天被人刺激的一文不值，就因为自己丢...
上面操作User表的CRUD代码,为了简化此处只写AddUserAsync添加操作,其他代码就不在详细介绍。 FreeSql 使用 DbContext 接替 EF Core 在Entity Framework(简称 EF)中创建模型后,应用程序所交互的主要类是System.Data.Entity.DbContext(通常称为上下文类)。默认情况下,上下文管理与数据库的连接。
The database context keeps track of whether entities in memory are in sync with their corresponding rows in the database. This tracking information determines what happens when SaveChangesAsync is called. For example, when a new entity is passed to the AddAsync method, that entity's state is ...
The provider looks and feels just like any other Entity Framework Core provider. Here's a quick sample to get you started: awaitusingvarctx=newBlogContext();awaitctx.Database.EnsureDeletedAsync();awaitctx.Database.EnsureCreatedAsync();// Insert a Blogctx.Blogs.Add(new(){Name="FooBlog"});...
ef_crypto_dto依赖于ef_core,故将依赖引入为dependencies方式,即开发者在使用ef_crypto_dto时无需自行引入ef_core,ef_crypto_dto会自动下载对应依赖版本 📦使用 1.在项目中引入插件 import { SM2, SM2Sync, AES, AESSync,xxxx} from '@yunkss/ef_crypto_dto' ...
[HttpPost] [ValidateAntiForgeryToken] public async Task<IActionResult> Create( [Bind("EnrollmentDate,FirstMidName,LastName")] Student student) { try { if (ModelState.IsValid) { _context.Add(student); await _context.SaveChangesAsync(); return RedirectToAction(nameof(Index)); } } catch (DbUpda...