1protectedvoidApplication_Start()2{34Database.SetInitializer(newCreateDatabaseIfNotExists<BookDinner.Models.BookDinnerContext>());5Database.SetInitializer(newDropCreateDatabaseIfModelChanges<BookDinner.Models.BookDinnerContext>());6using(varcontext =newBookDinner.Models.BookDinnerContext())//有这段代码,...
3.创建Ado.net实体数据模型 3.打开实体数据模型向导Entity Framework有四种模型选择 来自数据库的EF设计器(Database First)、空EF设计器(Model First)、空CodeFirst模型(Code First)、来自数据库的CodeFirst模型(Code First) 4. 选择已存在的数据库连接 5.下一步显示数据库中所有的表、视图和存储过程 备注: Plura...
For Select or enter a database name, select Northwind, and then select OK. In Choose Your Data Connection, select your LocalDB Northwind connection, and select Next. If prompted, choose the version of Entity Framework you're using, and then select Next. In the next page of ...
If your application needs to modify data in nontrivial ways and update the database, consider using Entity Framework and data binding. Doing so allows your user interface controls to automatically sync to changes in the underlying data.To access the complete code for this tutorial...
Source: RelationalDatabaseCreator.cs 创建物理数据库。 不要尝试使用任何架构填充它。 C# 复制 public abstract void Create(); 实现 Create() 适用于 产品版本 Entity Framework Core 1.0, 1.1, 2.0, 2.1, 2.2, 3.0, 3.1, 5.0, 6.0, 7.0, 8.0, 9.0 在...
A SQL Server-specific MigrationOperation to create a database.C# Copy [System.Diagnostics.DebuggerDisplay("CREATE DATABASE {Name}")] public class SqlServerCreateDatabaseOperation : Microsoft.EntityFrameworkCore.Migrations.Operations.DatabaseOperation...
The Transact-SQL Editor is invoked when you use the View Code contextual menu to open a database entity in a connected database or a project. It is also automatically opened when you use the New Query contextual menu from the SQL Server Object Explorer, or add a new script object to a...
The objects referenced by the function are referenced using a two-part name. The function and the objects it references belong to the same database. The user who executed the CREATE FUNCTION statement has REFERENCES permission on the database objects that the function references. RETURNS NULL ON...
The objects referenced by the function are referenced using a two-part name. The function and the objects it references belong to the same database. The user who executed the CREATE FUNCTION statement has REFERENCES permission on the database objects that the function references. RETURNS NULL ON...
The objects referenced by the function are referenced using a two-part name. The function and the objects it references belong to the same database. The user who executed the CREATE FUNCTION statement has REFERENCES permission on the database objects that the function references. RETURNS NULL ON...