Sdílet prostřednictvím

DbContext Konstruktory

  • Reference

Definice

Obor názvů:
Microsoft.EntityFrameworkCore
Sestavení:
Microsoft.EntityFrameworkCore.dll
Balíček:
Microsoft.EntityFrameworkCore v1.0.6
Balíček:
Microsoft.EntityFrameworkCore v1.1.6
Balíček:
Microsoft.EntityFrameworkCore v2.0.3
Balíček:
Microsoft.EntityFrameworkCore v2.1.11
Balíček:
Microsoft.EntityFrameworkCore v2.2.6
Balíček:
Microsoft.EntityFrameworkCore v3.0.0
Balíček:
Microsoft.EntityFrameworkCore v3.1.0
Balíček:
Microsoft.EntityFrameworkCore v5.0.0
Balíček:
Microsoft.EntityFrameworkCore v6.0.0
Balíček:
Microsoft.EntityFrameworkCore v7.0.0
Balíček:
Microsoft.EntityFrameworkCore v8.0.0

Přetížení

DbContext()

Inicializuje novou instanci DbContext třídy . Metoda OnConfiguring(DbContextOptionsBuilder) bude volána ke konfiguraci databáze (a dalších možností), která se má použít pro tento kontext.
DbContext(DbContextOptions)

Inicializuje novou instanci DbContext třídy pomocí zadaných možností. Metoda OnConfiguring(DbContextOptionsBuilder) bude stále volána, aby bylo možné další konfiguraci možností.

DbContext()

Inicializuje novou instanci DbContext třídy . Metoda OnConfiguring(DbContextOptionsBuilder) bude volána ke konfiguraci databáze (a dalších možností), která se má použít pro tento kontext.

protected DbContext ();
[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 ();
[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.")]
[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("EF Core isn't fully compatible with NativeAOT, and running the application may generate unexpected runtime failures.")]
protected DbContext ();
Protected Sub New ()
Atributy
RequiresUnreferencedCodeAttribute RequiresDynamicCodeAttribute

Poznámky

Další informace a příklady najdete v tématu Životnost, konfigurace a inicializace DbContext .

Platí pro

DbContext(DbContextOptions)

Inicializuje novou instanci DbContext třídy pomocí zadaných možností. Metoda OnConfiguring(DbContextOptionsBuilder) bude stále volána, aby bylo možné další konfiguraci možností.

public DbContext (Microsoft.EntityFrameworkCore.DbContextOptions options);
[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.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.")]
[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("EF Core isn't fully compatible with NativeAOT, and running the application may generate unexpected runtime failures.")]
public DbContext (Microsoft.EntityFrameworkCore.DbContextOptions options);
new Microsoft.EntityFrameworkCore.DbContext : Microsoft.EntityFrameworkCore.DbContextOptions -> Microsoft.EntityFrameworkCore.DbContext
[<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
[<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.")>]
[<System.Diagnostics.CodeAnalysis.RequiresDynamicCode("EF Core isn't fully compatible with NativeAOT, and running the application may generate unexpected runtime failures.")>]
new Microsoft.EntityFrameworkCore.DbContext : Microsoft.EntityFrameworkCore.DbContextOptions -> Microsoft.EntityFrameworkCore.DbContext
Public Sub New (options As DbContextOptions)

Parametry

options
DbContextOptions

Možnosti pro tento kontext.

Atributy
RequiresUnreferencedCodeAttribute RequiresDynamicCodeAttribute

Poznámky

Další informace a příklady najdete v tématech Životnost, konfigurace a inicializacedbContextu a Použití DbContextOptions .

Platí pro