XPObjectSpaceProvider.InstantFeedbackMappingMode Property
Specifies what properties should be mapped on a grid in the InstantFeedback mode for all Object Spaces.
Namespace: DevExpress.ExpressApp.Xpo
Assembly: DevExpress.ExpressApp.Xpo.v19.2.dll
Declaration
Property Value
Type | Description |
---|---|
XPInstantFeedbackSourceMappingMode | The XPInstantFeedbackSourceMappingMode enumeration value that specify a properties mapping mode in the InstantFeedback mode. |
Remarks
By default, in the InstantFeedback mode, all properties values are calculated at once regardless of grid columns settings. If you need to calculate only visible columns values, set the InstantFeedbackMappingMode property to XPInstantFeedbackSourceMappingMode.RequiredProperties as demonstrated below:
protected override void CreateDefaultObjectSpaceProvider(CreateCustomObjectSpaceProviderEventArgs
args) {
XPObjectSpaceProvider provider = new XPObjectSpaceProvider(args.ConnectionString, args.Connection);
provider.InstantFeedbackMappingMode = XPInstantFeedbackSourceMappingMode.RequiredProperties;
args.ObjectSpaceProvider = provider;
}
To map other columns which are not visible in the grid, add them to a collection of displayed options as described in the CollectionSourceBase.DisplayableProperties topic.
If you want to specify what properties should be mapped on a grid for a particular View, use the XPObjectSpace.InstantFeedbackMappingMode property of a target Object Space.