DbContext Constructors

Reference

Definition

Namespace:: System.Data.Entity

Assembly:: EntityFramework.dll

Important

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Overloads

DbContext()	Constructs a new context instance using conventions to create the name of the database to which a connection will be made. The by-convention name is the full name (namespace + class name) of the derived context class. See the class remarks for how this is used to create a connection.
DbContext(DbCompiledModel)	Constructs a new context instance using conventions to create the name of the database to which a connection will be made, and initializes it from the given model. The by-convention name is the full name (namespace + class name) of the derived context class. See the class remarks for how this is used to create a connection.
DbContext(String)	Constructs a new context instance using the given string as the name or connection string for the database to which a connection will be made. See the class remarks for how this is used to create a connection.
DbContext(DbConnection, Boolean)	Constructs a new context instance using the existing connection to connect to a database. The connection will not be disposed when the context is disposed if `contextOwnsConnection` is `false`.
DbContext(ObjectContext, Boolean)	Constructs a new context instance around an existing ObjectContext.
DbContext(ObjectContext, Boolean)	Constructs a new context instance around an existing ObjectContext.
DbContext(String, DbCompiledModel)	Constructs a new context instance using the given string as the name or connection string for the database to which a connection will be made, and initializes it from the given model. See the class remarks for how this is used to create a connection.
DbContext(DbConnection, DbCompiledModel, Boolean)	Constructs a new context instance using the existing connection to connect to a database, and initializes it from the given model. The connection will not be disposed when the context is disposed if `contextOwnsConnection` is `false`.

DbContext()

Constructs a new context instance using conventions to create the name of the database to which a connection will be made. The by-convention name is the full name (namespace + class name) of the derived context class. See the class remarks for how this is used to create a connection.

protected DbContext ();

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")]
protected DbContext ();

Protected Sub New ()

Attributes: SuppressMessageAttribute

Applies to

DbContext(DbCompiledModel)

Constructs a new context instance using conventions to create the name of the database to which a connection will be made, and initializes it from the given model. The by-convention name is the full name (namespace + class name) of the derived context class. See the class remarks for how this is used to create a connection.

protected DbContext (System.Data.Entity.Infrastructure.DbCompiledModel model);

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
protected DbContext (System.Data.Entity.Infrastructure.DbCompiledModel model);

new System.Data.Entity.DbContext : System.Data.Entity.Infrastructure.DbCompiledModel -> System.Data.Entity.DbContext

Protected Sub New (model As DbCompiledModel)

Parameters

model: DbCompiledModel

The model that will back this context.

Attributes: SuppressMessageAttribute

Applies to

DbContext(String)

Constructs a new context instance using the given string as the name or connection string for the database to which a connection will be made. See the class remarks for how this is used to create a connection.

public DbContext (string nameOrConnectionString);

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public DbContext (string nameOrConnectionString);

new System.Data.Entity.DbContext : string -> System.Data.Entity.DbContext

Public Sub New (nameOrConnectionString As String)

Parameters

nameOrConnectionString: String

Either the database name or a connection string.

Attributes: SuppressMessageAttribute

Applies to

DbContext(DbConnection, Boolean)

Constructs a new context instance using the existing connection to connect to a database. The connection will not be disposed when the context is disposed if contextOwnsConnection is false.

public DbContext (System.Data.Common.DbConnection existingConnection, bool contextOwnsConnection);

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public DbContext (System.Data.Common.DbConnection existingConnection, bool contextOwnsConnection);

new System.Data.Entity.DbContext : System.Data.Common.DbConnection * bool -> System.Data.Entity.DbContext

Public Sub New (existingConnection As DbConnection, contextOwnsConnection As Boolean)

Parameters

existingConnection: DbConnection

An existing connection to use for the new context.

contextOwnsConnection: Boolean

If set to true the connection is disposed when the context is disposed, otherwise the caller must dispose the connection.

Attributes: SuppressMessageAttribute

Applies to

DbContext(ObjectContext, Boolean)

Constructs a new context instance around an existing ObjectContext.

public DbContext (System.Data.Entity.Core.Objects.ObjectContext objectContext, bool dbContextOwnsObjectContext);

new System.Data.Entity.DbContext : System.Data.Entity.Core.Objects.ObjectContext * bool -> System.Data.Entity.DbContext

Parameters

objectContext: ObjectContext

An existing ObjectContext to wrap with the new context.

dbContextOwnsObjectContext: Boolean

If set to true the ObjectContext is disposed when the DbContext is disposed, otherwise the caller must dispose the connection.

Applies to

DbContext(ObjectContext, Boolean)

Constructs a new context instance around an existing ObjectContext.

public DbContext (System.Data.Objects.ObjectContext objectContext, bool dbContextOwnsObjectContext);

new System.Data.Entity.DbContext : System.Data.Objects.ObjectContext * bool -> System.Data.Entity.DbContext

Parameters

objectContext: ObjectContext

dbContextOwnsObjectContext: Boolean

Applies to

DbContext(String, DbCompiledModel)

Constructs a new context instance using the given string as the name or connection string for the database to which a connection will be made, and initializes it from the given model. See the class remarks for how this is used to create a connection.

public DbContext (string nameOrConnectionString, System.Data.Entity.Infrastructure.DbCompiledModel model);

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public DbContext (string nameOrConnectionString, System.Data.Entity.Infrastructure.DbCompiledModel model);

new System.Data.Entity.DbContext : string * System.Data.Entity.Infrastructure.DbCompiledModel -> System.Data.Entity.DbContext

Public Sub New (nameOrConnectionString As String, model As DbCompiledModel)

Parameters

nameOrConnectionString: String

Either the database name or a connection string.

model: DbCompiledModel

The model that will back this context.

Attributes: SuppressMessageAttribute

Applies to

DbContext(DbConnection, DbCompiledModel, Boolean)

Constructs a new context instance using the existing connection to connect to a database, and initializes it from the given model. The connection will not be disposed when the context is disposed if contextOwnsConnection is false.

public DbContext (System.Data.Common.DbConnection existingConnection, System.Data.Entity.Infrastructure.DbCompiledModel model, bool contextOwnsConnection);

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public DbContext (System.Data.Common.DbConnection existingConnection, System.Data.Entity.Infrastructure.DbCompiledModel model, bool contextOwnsConnection);

new System.Data.Entity.DbContext : System.Data.Common.DbConnection * System.Data.Entity.Infrastructure.DbCompiledModel * bool -> System.Data.Entity.DbContext

Public Sub New (existingConnection As DbConnection, model As DbCompiledModel, contextOwnsConnection As Boolean)

Parameters

existingConnection: DbConnection

An existing connection to use for the new context.

model: DbCompiledModel

The model that will back this context.

contextOwnsConnection: Boolean

If set to true the connection is disposed when the context is disposed, otherwise the caller must dispose the connection.

Attributes: SuppressMessageAttribute

Applies to

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DbContext Constructors

Definition

Overloads

DbContext()

Applies to

DbContext(DbCompiledModel)

Parameters

Applies to

DbContext(String)

Parameters

Applies to

DbContext(DbConnection, Boolean)

Parameters

Applies to

DbContext(ObjectContext, Boolean)

Parameters

Applies to

DbContext(ObjectContext, Boolean)

Parameters

Applies to

DbContext(String, DbCompiledModel)

Parameters

Applies to

DbContext(DbConnection, DbCompiledModel, Boolean)

Parameters

Applies to

Additional resources