Class PrimaryKeyAttribute

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

Inheritance
System.Object
MappingAttribute
PrimaryKeyAttribute
Namespace: LinqToDB.Mapping
Assembly: linq2db.dll
Syntax
public class PrimaryKeyAttribute : MappingAttribute

Constructors

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PrimaryKeyAttribute()

Creates attribute instance.

Declaration
public PrimaryKeyAttribute()
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PrimaryKeyAttribute(Int32)

Creates attribute instance.

Declaration
public PrimaryKeyAttribute(int order)
Parameters
Type Name Description
System.Int32 order

Column order in composite primary key.
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PrimaryKeyAttribute(Nullable<String>, Int32)

Creates attribute instance.

Declaration
public PrimaryKeyAttribute(string? configuration, int order)
Parameters
Type Name Description
System.Nullable<System.String> configuration

Mapping schema configuration name. See Configuration.
System.Int32 order

Column order in composite primary key.

Properties

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Configuration

Gets or sets mapping schema configuration name, for which this attribute should be taken into account. ProviderName for standard names. Attributes with null or empty string Configuration value applied to all configurations (if no attribute found for current configuration).

Declaration
public string? Configuration { get; set; }
Property Value
Type Description
System.Nullable<System.String>
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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.

Declaration
public int Order { get; set; }
Property Value
Type Description
System.Int32

Methods

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GetObjectID()

Declaration
public override string GetObjectID()
Returns
Type Description
System.String
Overrides

Extension Methods