创建Entity Framework 数据模型 实现基本的 CRUD 功能 排序、筛选和分页 连接复原和命令截获 Code First 迁移和部署 创建更复杂的数据模型 读取相关数据 更新相关数据 异步和存储过程 处理并发 实现继承 高级Entity Framework 方案 使用ASP.NET MVC 实现 EF Data...
This is because the changes you made don’t prevent Entity Framework from being able to use the current model to access the out-of-date database schema. Entity Framework expects that Destination names should be 200 characters or less. Since the database didn’t change, it doesn’t enforce ...
An unhandled exception of type 'System.InvalidOperationException' occurred in EntityFramework.dll Additional information: The model backing the 'BloggingContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwl...
In the new Entity Framework Code First MVC tutorial series there are some examples of what has come to be called fluent API method calls. This term refers to code in which a series of method calls are chained together. The Creating a More Complex Data Model tuto...
Follow author Ricardo Peres as he introduces the newest development mode for Entity Framework, Code First. With Entity Framework Code First Succinctly®, you will learn the ins and outs of developing code by hand in Code First. With this knowledge, you will be able to have finer control ove...
Follow author Ricardo Peres as he introduces the newest development mode for Entity Framework, Code First. With Entity Framework Code First Succinctly®, you will learn the ins and outs of developing code by hand in Code First. With this knowledge, you will be able to have finer control ove...
参与 Entity Framework 6 采用开放式开发模型。 访问我们的 GitHub 存储库,了解如何帮助改进 EF。Code First 资源对现有数据库工作流采用 Code First 对新的数据库工作流采用 Code First 使用Code First 映射枚举 使用Code First 映射空间类型 编写自定义 Code First 约定 将Code First Fluent 配置与 Visual Basic ...
Entity Framework 6 Code First的简单使用和更新数据库结构 一、安装Entity Framework 6 在项目中右击选择“管理NuGet程序包",联机搜索Entity Framework,点击安装 二、配置数据库连接 在App.config中加入数据库连接字符串的配置 <connectionStrings> ...
选择“使用 Entity Framework (CRUD) 的 Razor Pages”“添加”。 在“添加使用实体框架的 Razor Pages (CRUD)”对话框中: 在“模型类”下拉列表中,选择“Student (ContosoUniversity.Models)”。 在“数据上下文类”行中,选择(加号)。 将数据上下文名称更改为以SchoolContext结尾,而不以ContosoUniversityContext结尾...
选择“使用 Entity Framework (CRUD) 的 Razor Pages”“添加”。 在“添加使用实体框架的 Razor Pages (CRUD)”对话框中: 在“模型类”下拉列表中,选择“Student (ContosoUniversity.Models)”。 在“数据上下文类”行中,选择(加号)。 将数据上下文名称更改为以SchoolContext结尾,而不以ContosoUniversityContext结尾...