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UnboundSource.ValueNeeded Event

Occurs when a value is requested from the UnboundSource.

Namespace: DevExpress.Data

Assembly: DevExpress.Data.v24.1.dll

NuGet Package: DevExpress.Data


public event EventHandler<UnboundSourceValueNeededEventArgs> ValueNeeded

Event Data

The ValueNeeded event's data class is UnboundSourceValueNeededEventArgs. The following properties provide information specific to this event:

Property Description
PropertyName Gets the name of the property whose value is requested.
RowIndex Gets the row index of the value.
Tag Gets an object that contains data associated with the value.
Value Specifies the value which is requested.

The event data class exposes the following methods:



Handle this event to obtain data from your data source. An example is provided in the UnboundSource topic.

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ValueNeeded event.


The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

See Also