Table of Contents

Interface IEntity

Namespace
ToSic.Eav.Data
Assembly
ToSic.Eav.Core.dll

The primary data-item in the system, IEntity is a generic data-item for any kind of information. Note that it inherits IEntityLight which is the basic definition without languages, versioning, publishing etc.

We recommend you read about the Understanding Data...

[PublicApi]
public interface IEntity : IHasMetadata, IEntityLight, IAppIdentityLight, IHasPermissions
Inherited Members

Properties

Attributes

All the attributes of the current Entity.

IImmutableDictionary<string, IAttribute> Attributes { get; }

Property Value

IImmutableDictionary<string, IAttribute>

this[string]

Gets an Attribute using its StaticName

IAttribute this[string attributeName] { get; }

Parameters

attributeName string

StaticName of the Attribute

Property Value

IAttribute

A typed Attribute Object

Metadata

Get the metadata for this item

IMetadataOf Metadata { get; }

Property Value

IMetadataOf

A typed Metadata provider for this Entity

Remarks

The metadata is either already prepared, from the same app, or from a remote app

Title

Gets the "official" Title-Attribute IAttribute<T>

IAttribute Title { get; }

Property Value

IAttribute

The title of this Entity. The field used is determined in the IContentType. If you need a string, use GetBestTitle() instead.

Version

version of this entity in the repository

int Version { get; }

Property Value

int

The version number.

Methods

Children(string, string)

Get all the children IEntity items - optionally only of a specific field and/or type

List<IEntity> Children(string field = null, string type = null)

Parameters

field string

Optional field name to access

type string

Optional type to filter for

Returns

List<IEntity>

List of children, or empty list if not found

Get(string)

Get a value typed as object from this entity.

[PublicApi]
object Get(string name)

Parameters

name string

the field/attribute name

Returns

object

Remarks

  • Introduced as beta in 15.06, published in v17
  • If you want to supply a fallback it will automatically use the generic version of this method

Get(string, NoParamOrder, string, string[])

Get a value typed as object from this entity.

[PublicApi]
object Get(string name, NoParamOrder noParamOrder = default, string language = null, string[] languages = null)

Parameters

name string

the field/attribute name

noParamOrder NoParamOrder

see Convention: Named Parameters

language string

optional language eg en-us

languages string[]

optional list of language IDs which can be a list which is checked in the order provided

Returns

object

Remarks

  • Introduced as beta in 15.06, published in v17
  • If you want to supply a fallback it will automatically use the generic version of this method

GetBestTitle(string[])

Best way to get the current entities title

string GetBestTitle(string[] dimensions)

Parameters

dimensions string[]

Array of dimensions/languages to use in the lookup

Returns

string

The entity title as a string

Get<TValue>(string)

Get a value in the expected type from this entity.

[PublicApi]
TValue Get<TValue>(string name)

Parameters

name string

the field/attribute name

Returns

TValue

Type Parameters

TValue

The type to try-convert the result to

Remarks

  • Introduced as beta in 15.06, published in v17
  • If you want to supply a fallback it will automatically use the other version of this method

Get<TValue>(string, NoParamOrder, TValue, string, string[])

Get a value in the expected type from this entity - or a fallback value instead.

[PublicApi]
TValue Get<TValue>(string name, NoParamOrder noParamOrder = default, TValue fallback = default, string language = null, string[] languages = null)

Parameters

name string

the field/attribute name

noParamOrder NoParamOrder

see Convention: Named Parameters

fallback TValue

value to be returned if finding or conversion it didn't succeed

language string

optional language eg en-us

languages string[]

optional list of language IDs which can be a list which is checked in the order provided

Returns

TValue

Type Parameters

TValue

The type to try-convert the result to

Remarks

  • Introduced as beta in 15.06, published in v17
  • If you want to supply a fallback it will automatically use the generic version of this method

Parents(string, string)

Get all the parent IEntity items - optionally only of a specific type and/or referenced in a specific field

List<IEntity> Parents(string type = null, string field = null)

Parameters

type string

The type name to filter for

field string

The field name where a parent references this item

Returns

List<IEntity>

List of children, or empty list if not found

Value(string)

Get the value of this field as an object. This overload without languages will always return the first value it finds, so if the data is multi-lingual, it's not reliable. This is preferred for internal work for configuration objects and similar which are not multi-language.

object Value(string fieldName)

Parameters

fieldName string

Returns

object

The value or null if not found

Remarks

In addition to the fields this Entity has (like FirstName, etc.) you can also use known terms like EntityId, Modified etc.

Value<T>(string)

Get the value of this field in a type-safe way. This overload without languages will always return the first value it finds, so if the data is multi-lingual, it's not reliable. This is preferred for internal work for configuration objects and similar which are not multi-language.

T Value<T>(string fieldName)

Parameters

fieldName string

Returns

T

The typed value or the (default) value - so a null for strings, false for boolean etc.

Type Parameters

T

The type, usually string, int, bool, etc.

Remarks

In addition to the fields this Entity has (like FirstName, etc.) you can also use known terms like EntityId, Modified etc.

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