CollectionSourceBase.DataAccessMode Property

Gets the mode used to access the CollectionSourceBase‘s collection.

Assembly : DevExpress.ExpressApp.v25.2.dll

NuGet Package : DevExpress.ExpressApp

Declaration

C#
VB.NET

csharp

public CollectionSourceDataAccessMode DataAccessMode { get; }

Public ReadOnly Property DataAccessMode As CollectionSourceDataAccessMode

Property Value

Type	Description
CollectionSourceDataAccessMode

A CollectionSourceDataAccessMode enumeration value that specifies the mode used to access the Collection Source’s CollectionSourceBase.Collection.

Available values:

Name	Description
Client

The entire record set required for the current List View is loaded into memory. All the data processing takes place on the client side.

| | Server |

Data is requested from a data store in small portions that should currently be displayed. All data-aware operations are performed on the data server side.

| | DataView |

A lightweight read-only list of data records (DevExpress.ExpressApp.EFCore.EFCoreDataView or XPView) is retrieved without loading complete persistent objects.

| | InstantFeedback |

A List View’s control continues responding to a user’s actions while the data is being retrieved in a background thread (see Instant Feedback Mode).

| | InstantFeedbackView |

A lightweight read-only list of data records (ObjectRecord) is retrieved without loading complete persistent objects. A List View’s control continues responding to a user’s actions while the data is being retrieved in a background thread.

| | ServerView |

A lightweight read-only list of data records (ObjectRecord) is retrieved without loading complete persistent objects. Data is requested from a data store in small portions that should currently be displayed.

| | Queryable |

The collection source constructs a query that the List Editor can modify to load only objects visible in the control. Only DevExpress.ExpressApp.Blazor.Editors.Grid.GridListEditor [deprecated] supports this mode.

Remarks

When you create a Collection Source in code, you can initialize the DataAccessMode property using a constructor with the dataAccessMode parameter. To set this property to the required value in the Model Editor, use the IModelListView.DataAccessMode property of the Views | <ListView> node corresponding to the List View for which the current Collection Source is created.

Refer to the following topics for detailed descriptions of the available data access modes: