# Class NpgsqlOptionsExtension

Namespace
  Npgsql.EntityFrameworkCore.PostgreSQL.Infrastructure.Internal

Assembly
  Npgsql.EntityFrameworkCore.PostgreSQL.dll

Represents options managed by the Npgsql.

    public class NpgsqlOptionsExtension : RelationalOptionsExtension, IDbContextOptionsExtension

Inheritance
  object
  RelationalOptionsExtension
  NpgsqlOptionsExtension

Implements
  IDbContextOptionsExtension

Inherited Members
  RelationalOptionsExtension.WithConnection(DbConnection, bool)
  RelationalOptionsExtension.WithCommandTimeout(int?)
  RelationalOptionsExtension.WithMaxBatchSize(int?)
  RelationalOptionsExtension.WithMinBatchSize(int?)
  RelationalOptionsExtension.WithUseRelationalNulls(bool)
  RelationalOptionsExtension.WithUseQuerySplittingBehavior(QuerySplittingBehavior)
  RelationalOptionsExtension.WithMigrationsAssembly(string)
  RelationalOptionsExtension.WithMigrationsHistoryTableName(string)
  RelationalOptionsExtension.WithMigrationsHistoryTableSchema(string)
  RelationalOptionsExtension.WithExecutionStrategyFactory(Func<ExecutionStrategyDependencies, IExecutionStrategy>)
  RelationalOptionsExtension.Extract(IDbContextOptions)
  RelationalOptionsExtension.WithDefaultWarningConfiguration(CoreOptionsExtension)
  RelationalOptionsExtension.ConnectionString
  RelationalOptionsExtension.Connection
  RelationalOptionsExtension.IsConnectionOwned
  RelationalOptionsExtension.CommandTimeout
  RelationalOptionsExtension.MaxBatchSize
  RelationalOptionsExtension.UseRelationalNulls
  RelationalOptionsExtension.QuerySplittingBehavior
  RelationalOptionsExtension.MigrationsAssembly
  RelationalOptionsExtension.MigrationsHistoryTableName
  RelationalOptionsExtension.MigrationsHistoryTableSchema
  RelationalOptionsExtension.ExecutionStrategyFactory
  object.Equals(object)
  object.Equals(object, object)
  object.GetHashCode()
  object.GetType()
  object.MemberwiseClone()
  object.ReferenceEquals(object, object)
  object.ToString()

## Constructors

### NpgsqlOptionsExtension()

Initializes an instance of NpgsqlOptionsExtension with the default settings.

    public NpgsqlOptionsExtension()

### NpgsqlOptionsExtension(NpgsqlOptionsExtension)

Initializes an instance of NpgsqlOptionsExtension by copying the specified instance.

    public NpgsqlOptionsExtension(NpgsqlOptionsExtension copyFrom)

#### Parameters

`copyFrom` NpgsqlOptionsExtension

  The instance to copy.

## Fields

### DefaultPostgresVersion

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static readonly Version DefaultPostgresVersion

#### Field Value

Version

## Properties

### AdminDatabase

The name of the database for administrative operations.

    public virtual string? AdminDatabase { get; }

#### Property Value

string

### DataSource

The DbDataSource, or null if a connection string or DbConnection was used instead of a DbDataSource.

    public virtual DbDataSource? DataSource { get; }

#### Property Value

DbDataSource

### Info

Information/metadata about the extension.

    public override DbContextOptionsExtensionInfo Info { get; }

#### Property Value

DbContextOptionsExtensionInfo

### IsPostgresVersionSet

The backend version to target, but returns null unless the user explicitly specified a version.

    public virtual bool IsPostgresVersionSet { get; }

#### Property Value

bool

### MinBatchSize

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public override int? MinBatchSize { get; }

#### Property Value

int?

### PostgresVersion

The backend version to target.

    public virtual Version PostgresVersion { get; }

#### Property Value

Version

### ProvideClientCertificatesCallback

The specified ProvideClientCertificatesCallback.

    public virtual ProvideClientCertificatesCallback? ProvideClientCertificatesCallback { get; }

#### Property Value

ProvideClientCertificatesCallback

### ProvidePasswordCallback

The specified ProvidePasswordCallback.

    public virtual ProvidePasswordCallback? ProvidePasswordCallback { get; }

#### Property Value

ProvidePasswordCallback

### RemoteCertificateValidationCallback

The specified RemoteCertificateValidationCallback.

    public virtual RemoteCertificateValidationCallback? RemoteCertificateValidationCallback { get; }

#### Property Value

RemoteCertificateValidationCallback

### ReverseNullOrdering

True if reverse null ordering is enabled; otherwise, false.

    public virtual bool ReverseNullOrdering { get; }

#### Property Value

bool

### UseRedshift

Whether to target Redshift.

    public virtual bool UseRedshift { get; }

#### Property Value

bool

### UserRangeDefinitions

The list of range mappings specified by the user.

    public virtual IReadOnlyList<UserRangeDefinition> UserRangeDefinitions { get; }

#### Property Value

IReadOnlyList<UserRangeDefinition>

## Methods

### ApplyServices(IServiceCollection)

Adds the services required to make the selected options work. This is used when there is no external IServiceProvider and EF is maintaining its own service provider internally. This allows database providers (and other extensions) to register their required services when EF is creating an service provider.

    public override void ApplyServices(IServiceCollection services)

#### Parameters

`services` IServiceCollection

  The collection to add services to.

### Clone()

Override this method in a derived class to ensure that any clone created is also of that class.

    protected override RelationalOptionsExtension Clone()

#### Returns

RelationalOptionsExtension

  A clone of this instance, which can be modified before being returned as immutable.

### Validate(IDbContextOptions)

Gives the extension a chance to validate that all options in the extension are valid. Most extensions do not have invalid combinations and so this will be a no-op. If options are invalid, then an exception should be thrown.

    public override void Validate(IDbContextOptions options)

#### Parameters

`options` IDbContextOptions

  The options being validated.

### WithAdminDatabase(string?)

Returns a copy of the current instance configured to use the specified administrative database.

    public virtual NpgsqlOptionsExtension WithAdminDatabase(string? adminDatabase)

#### Parameters

`adminDatabase` string

  The name of the database for administrative operations.

#### Returns

NpgsqlOptionsExtension

### WithConnection(DbConnection?)

Creates a new instance with all options the same as for this instance, but with the given option changed. It is unusual to call this method directly. Instead use DbContextOptionsBuilder.

    public override RelationalOptionsExtension WithConnection(DbConnection? connection)

#### Parameters

`connection` DbConnection

  The option to change.

#### Returns

RelationalOptionsExtension

  A new instance with the option changed.

### WithConnectionString(string?)

Creates a new instance with all options the same as for this instance, but with the given option changed. It is unusual to call this method directly. Instead use DbContextOptionsBuilder.

    public override RelationalOptionsExtension WithConnectionString(string? connectionString)

#### Parameters

`connectionString` string

  The option to change.

#### Returns

RelationalOptionsExtension

  A new instance with the option changed.

### WithDataSource(DbDataSource?)

Creates a new instance with all options the same as for this instance, but with the given option changed. It is unusual to call this method directly. Instead use DbContextOptionsBuilder.

    public virtual RelationalOptionsExtension WithDataSource(DbDataSource? dataSource)

#### Parameters

`dataSource` DbDataSource

  The option to change.

#### Returns

RelationalOptionsExtension

  A new instance with the option changed.

### WithPostgresVersion(Version?)

Returns a copy of the current instance with the specified PostgreSQL version.

    public virtual NpgsqlOptionsExtension WithPostgresVersion(Version? postgresVersion)

#### Parameters

`postgresVersion` Version

  The backend version to target.

#### Returns

NpgsqlOptionsExtension

  A copy of the current instance with the specified PostgreSQL version.

### WithProvideClientCertificatesCallback(ProvideClientCertificatesCallback?)

Returns a copy of the current instance with the specified ProvideClientCertificatesCallback.

    public virtual NpgsqlOptionsExtension WithProvideClientCertificatesCallback(ProvideClientCertificatesCallback? callback)

#### Parameters

`callback` ProvideClientCertificatesCallback

  The specified callback.

#### Returns

NpgsqlOptionsExtension

### WithProvidePasswordCallback(ProvidePasswordCallback?)

Returns a copy of the current instance with the specified ProvidePasswordCallback.

    public virtual NpgsqlOptionsExtension WithProvidePasswordCallback(ProvidePasswordCallback? callback)

#### Parameters

`callback` ProvidePasswordCallback

  The specified callback.

#### Returns

NpgsqlOptionsExtension

### WithRedshift(bool)

Returns a copy of the current instance with the specified Redshift settings.

    public virtual NpgsqlOptionsExtension WithRedshift(bool useRedshift)

#### Parameters

`useRedshift` bool

  Whether to target Redshift.

#### Returns

NpgsqlOptionsExtension

  A copy of the current instance with the specified Redshift setting.

### WithRemoteCertificateValidationCallback(RemoteCertificateValidationCallback?)

Returns a copy of the current instance with the specified RemoteCertificateValidationCallback.

    public virtual NpgsqlOptionsExtension WithRemoteCertificateValidationCallback(RemoteCertificateValidationCallback? callback)

#### Parameters

`callback` RemoteCertificateValidationCallback

  The specified callback.

#### Returns

NpgsqlOptionsExtension

### WithUserRangeDefinition(string, string?, Type, string?)

Returns a copy of the current instance configured with the specified range mapping.

    public virtual NpgsqlOptionsExtension WithUserRangeDefinition(string rangeName, string? schemaName, Type subtypeClrType, string? subtypeName)

#### Parameters

`rangeName` string
`schemaName` string
`subtypeClrType` Type
`subtypeName` string

#### Returns

NpgsqlOptionsExtension

### WithUserRangeDefinition<TSubtype>(string, string?, string?)

Returns a copy of the current instance configured with the specified range mapping.

    public virtual NpgsqlOptionsExtension WithUserRangeDefinition<TSubtype>(string rangeName, string? schemaName = null, string? subtypeName = null)

#### Parameters

`rangeName` string
`schemaName` string
`subtypeName` string

#### Returns

NpgsqlOptionsExtension

#### Type Parameters

`TSubtype`