XPObjectSpaceProvider.InstantFeedbackMappingMode Property

Specifies what properties should be mapped on a grid in the InstantFeedback or InstantFeedbackView mode for all Object Spaces.

Namespace: DevExpress.ExpressApp.Xpo

Assembly: DevExpress.ExpressApp.Xpo.v23.2.dll

NuGet Package: DevExpress.ExpressApp.Xpo

Declaration

C#

public XPInstantFeedbackSourceMappingMode InstantFeedbackMappingMode { get; set; }

VB.NET

Public Property InstantFeedbackMappingMode As XPInstantFeedbackSourceMappingMode

Property Value

Type	Description
XPInstantFeedbackSourceMappingMode	The XPInstantFeedbackSourceMappingMode enumeration value that specifies a properties mapping mode in the InstantFeedback or InstantFeedbackView mode.

Available values:

Name	Description
AllProperties	All properties should be mapped on a grid.
RequiredProperties	Only visible properties should be mapped on a grid.

Remarks

By default, in the InstantFeedback and InstantFeedbackView modes, 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:

C#

protected override void CreateDefaultObjectSpaceProvider(CreateCustomObjectSpaceProviderEventArgs 
args) {
    XPObjectSpaceProvider provider = new XPObjectSpaceProvider(args.ConnectionString, args.Connection);
    provider.InstantFeedbackMappingMode = XPInstantFeedbackSourceMappingMode.RequiredProperties;
    args.ObjectSpaceProvider = provider;
}

VB.NET

Protected Overrides Sub CreateDefaultObjectSpaceProvider(ByVal args _
As CreateCustomObjectSpaceProviderEventArgs)
    Dim provider As New XPObjectSpaceProvider(args.ConnectionString, args.Connection)
    provider.InstantFeedbackMappingMode = XPInstantFeedbackSourceMappingMode.RequiredProperties
    args.ObjectSpaceProvider = provider
End Sub

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.