SuspendableDocumentNodeWithSingleAccumulatedDataTAccumulatedEventData_HasZeroOrOneEventArg Method

Determines whether there is no or only one single event arg accumulated. If this is the case, the return value is true. If there is one event arg accumulated, it is returned in the argument singleEventArg. The return value is false if there is more than one event arg accumulated. In this case the singleEventArg is null on return, and the calling function should use AccumulatedEventData to enumerate all accumulated event args.

Namespace: Altaxo.Main
Assembly: AltaxoBase (in AltaxoBase.dll) Version: 4.8.3179.0 (4.8.3179.0)

Syntax

Copy

protected override bool AccumulatedEventData_HasZeroOrOneEventArg(
	out EventArgs?? singleEventArg
)

Parameters

singleEventArg EventArgs: The EventArgs instance containing the event data, if there is exactly one event arg accumulated. Otherwise, it is null.

Return Value

Boolean
True if there is zero or one event arg accumulated, otherwise false.

Reference

SuspendableDocumentNodeWithSingleAccumulatedDataT Class

Altaxo.Main Namespace