Session.PreFetch<T>(IEnumerable<T>, String, IEnumerable) Method

Enforces loading data for associated collections.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v18.2.dll

Declaration

C#

public void PreFetch<T>(
    IEnumerable<T> objects,
    string collectionInObjects,
    IEnumerable collectionsContent
)

VB.NET

Public Sub PreFetch(Of T)(
    objects As IEnumerable(Of T),
    collectionInObjects As String,
    collectionsContent As IEnumerable
)

Parameters

Name	Type	Description
objects	IEnumerable<T>	An IEnumerable list of parent objects.
collectionInObjects	String	A string which is the name of the associated collection property.
collectionsContent	IEnumerable	IEnumerable list of the collection’s content. If a certain part of the collectionInObjects data was previously loaded, you can avoid reloading it by passing the loaded data to the collectionsContent parameter.

Type Parameters

Name
T

Remarks

By default, data is loaded automatically when you access a nested collection for the first time. When the PreFetch<T> method is called, all data for the specified collection is loaded at once. No additional SQL queries for this data will be will be performed later.