DbContext 构造函数

定义

命名空间:

Microsoft.EntityFrameworkCore

程序集:

Microsoft.EntityFrameworkCore.dll

程序包:

Microsoft.EntityFrameworkCore v10.0.0

重载

名称	说明
DbContext()	初始化 DbContext 类的新实例。 OnConfiguring(DbContextOptionsBuilder)将调用该方法以配置要用于此上下文的数据库（和其他选项）。
DbContext(DbContextOptions)	使用指定的选项初始化类的新实例 DbContext 。 OnConfiguring(DbContextOptionsBuilder)仍会调用该方法以允许进一步配置选项。

DbContext()

Source:

DbContext.cs

初始化 DbContext 类的新实例。 OnConfiguring(DbContextOptionsBuilder)将调用该方法以配置要用于此上下文的数据库（和其他选项）。

[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("EF Core isn't fully compatible with NativeAOT, and running the application may generate unexpected runtime failures.")]
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EF Core isn't fully compatible with trimming, and running the application may generate unexpected runtime failures. Some specific coding pattern are usually required to make trimming work properly, see https://aka.ms/efcore-docs-trimming for more details.")]
protected DbContext();

Protected Sub New ()

特性

RequiresDynamicCodeAttribute RequiresUnreferencedCodeAttribute

注解

有关详细信息 和示例，请参阅 DbContext 生存期、配置和初始化 。

DbContext(DbContextOptions)

Source:

DbContext.cs

使用指定的选项初始化类的新实例 DbContext 。 OnConfiguring(DbContextOptionsBuilder)仍会调用该方法以允许进一步配置选项。

[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("EF Core isn't fully compatible with NativeAOT, and running the application may generate unexpected runtime failures.")]
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EF Core isn't fully compatible with trimming, and running the application may generate unexpected runtime failures. Some specific coding pattern are usually required to make trimming work properly, see https://aka.ms/efcore-docs-trimming for more details.")]
public DbContext(Microsoft.EntityFrameworkCore.DbContextOptions options);

[<System.Diagnostics.CodeAnalysis.RequiresDynamicCode("EF Core isn't fully compatible with NativeAOT, and running the application may generate unexpected runtime failures.")>]
[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("EF Core isn't fully compatible with trimming, and running the application may generate unexpected runtime failures. Some specific coding pattern are usually required to make trimming work properly, see https://aka.ms/efcore-docs-trimming for more details.")>]
new Microsoft.EntityFrameworkCore.DbContext : Microsoft.EntityFrameworkCore.DbContextOptions -> Microsoft.EntityFrameworkCore.DbContext

Public Sub New (options As DbContextOptions)

参数

options

DbContextOptions

此上下文的选项。

特性

RequiresDynamicCodeAttribute RequiresUnreferencedCodeAttribute

注解

有关详细信息 和示例，请参阅 DbContext 生存期、配置和初始化 以及 使用 DbContextOptions 。