Instant Feedback™ UI

Prior to v2010 vol 2, there were two data binding modes for our WinForms Grid Control: standard data binding mode (designed to work with small and medium sized data sources) and server mode (tailored to work with large data sources).

Each of these data binding modes addresses specific business use scenarios... When in server mode, the XtraGrid loads data in small portions and delegates all data operations (sorting, grouping, filtering and calculating summaries) to the data server. This is the key to the server mode's high efficiency when working with large volumes of data. The only drawback to using server mode involved data operations when the connection to the server is slow. As you might expect, the Grid Control freezes until the data server completes operations and retrieves results for the Grid Control...

With our new Instant Feedback binding mode, you'll no longer experience any UI freezing. Data operations will be performed asynchronously, in a background thread and both the Grid Control and your application will be always highly responsive.

View the following video to see how the XtraGrid functions in Instant Feedback mode. The number of records in the underlying data source is 500,000 – and as such - it takes some time for the data server to process the Grid's requests and retrieve data. While data is being retrieved in a background thread, the Grid can optionally display a progress indicator within a panel.

To record the video above, we used a spinning wheel panel to describe the state of async data operations. This is an option available to you - by default, the progress indiator appears in the top left corner of the Grid:

Instant Feedback™ mode is also supported by our new SearchLookUpEdit control.

To activate this feature in either the Grid and/or SearchLookUpEdit Controls, use our specially designed data source controls - LinqInstantFeedbackSource or XPInstantFeedbackSource shipping with the eXpress Persistent Objects Library.