Virtual Source, Server Mode, Instant Feedback Components

• Aug 15, 2019
• 2 minutes to read

The Server Mode, Instant Feedback, and Virtual Source components allow you to populate the GridControl and perform data operations at the server level. This document describes the differences between these components.

	Virtual Source	Server Mode	Instant Feedback
Load Data on Demand
Load Data Asynchronously
Dynamic Properties
Data Editing
Sorting	*
Filtering	*
Grouping
Summary	*
Custom Summary	*
Build Custom Queries	**	***	***

*  The Virtual Source components disable data operations. To enable an operation, enable the GridControl‘s option and handle a data source event. Refer to the How to Use Virtual Sources topic for more information.

**  The Virtual Source components provide events to load data. You can use any data access technology.

***  The Server Mode and Instant Feedback components support the following data access technologies. You cannot customize queries from these data sources.

Data Access Technology	Server Mode Data Source	Instant Feedback UI Data Source
Entity Framework 4+	EntityServerModeSource	EntityInstantFeedbackSource
eXpress Persistent Objects	XPServerCollectionSource	XPInstantFeedbackSource
OData v4	ODataServerModeSource	ODataInstantFeedbackSource
WCF Data Services	WcfServerModeSource	WcfInstantFeedbackSource
LINQ to SQL	LinqServerModeSource	LinqInstantFeedbackSource
Parallel LINQ to Objects	PLinqServerModeSource	PLinqInstantFeedbackSource

The table above lists cross-platform components that are compatible with the GridControl. The WPF subscription also contains DataSource classes (EntityServerModeDataSource, EntityInstantFeedbackDataSource, etc.). These classes provide similar functionality, but you can add them to WPF controls in XAML.