Instant Feedback™ UI Mode
The DevExpress WPF Grid Control includes support for multiple binding modes, each designed to address a specific use case.
Our Standard data binding mode is effective when working with small to medium sized datasets and Server Mode
should be used for large datasets.
In Server Mode, the DevExpress WPF DXGrid loads data in small chunks and delegates data
processing/shaping (sorting, grouping, filtering, etc.) to the data server.
When a user scrolls through records, the grid first waits for a partial data fetch before populating individual rows.
Depending upon data source performance, data volume, and network connectivity, an application may freeze as data is being loaded
within the grid.
When you activate Instant Feedback™ UI mode, your end-users will no longer experience any UI lock-ups.
Data operations will be performed asynchronously - in a background thread - and both the Grid Control and your application
will always remain responsive to end-user actions.
The following animation demonstrates Instant Feedback™ UI Mode (the data source contains 1.6 million records).
During processing, the WPF Grid can optionally provide visual feedback for end-users.
By default, a dedicated indicator button is displayed to the left of column headers.
Optionally, a specialized panel can be displayed above the Grid while loading data asynchronously.
Instant Feedback™ UI Mode can be used with WCF Data Services and any Entity Framework 4 queryable source.
To activate this feature, use one of the following data sources - LinqInstantFeedbackSource, WcfInstantFeedbackDataSource, EntityInstantFeedbackDataSource or PLinqInstantFeedbackDataSource.
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