Class PrimaryKeyAttribute

Namespace

LinqToDB.Mapping

Assembly

linq2db.dll

Marks property or field as a member of primary key for current mapping type.

[AttributeUsage(AttributeTargets.Property|AttributeTargets.Field, AllowMultiple = true)]
public class PrimaryKeyAttribute : MappingAttribute, _Attribute

Inheritance

object

Attribute

MappingAttribute

PrimaryKeyAttribute

Implements

_Attribute

Inherited Members

MappingAttribute.Configuration

MappingAttribute.GetHashCode()

MappingAttribute.Equals(object)

Extension Methods

Sql.IsDistinctFrom<T>(T, T)

Sql.IsNotDistinctFrom<T>(T, T)

SqlExtensions.In<T>(T, T, T)

SqlExtensions.In<T>(T, T, T, T)

SqlExtensions.In<T>(T, params T[])

SqlExtensions.In<T>(T, IEnumerable<T>)

SqlExtensions.In<T>(T, IQueryable<T>)

SqlExtensions.NotIn<T>(T, T, T)

SqlExtensions.NotIn<T>(T, T, T, T)

SqlExtensions.NotIn<T>(T, params T[])

SqlExtensions.NotIn<T>(T, IEnumerable<T>)

SqlExtensions.NotIn<T>(T, IQueryable<T>)

Constructors

PrimaryKeyAttribute()

Creates attribute instance.

public PrimaryKeyAttribute()

PrimaryKeyAttribute(int)

Creates attribute instance.

public PrimaryKeyAttribute(int order)

Parameters

order int

Column order in composite primary key.

PrimaryKeyAttribute(string?, int)

Creates attribute instance.

public PrimaryKeyAttribute(string? configuration, int order)

Parameters

configuration string

Mapping schema configuration name. See LinqToDB.Configuration.

order int

Column order in composite primary key.

Properties

Order

Gets or sets order of current column in composite primary key. Order is used for query generation to define in which order primary key columns must be mentioned in query from columns with smallest order value to greatest. Default value: -1.

public int Order { get; set; }

Property Value

int

Methods

GetObjectID()

Returns mapping attribute id, based on all attribute options.

public override string GetObjectID()

Returns

string