IApp.AddFieldFromExpressionAsync Method (String, String, AsyncHandle)

IAppAddFieldFromExpressionAsync Method (String, String, AsyncHandle)

Adds a field on the fly.

The expression of a field on the fly is persisted but not its values.

Namespace: Qlik.Engine
Assembly: Qlik.Engine (in Qlik.Engine.dll) Version: 1.1.0.0 (1.1.0.0)

Syntax

Task<bool> AddFieldFromExpressionAsync(
	string name,
	string expr,
	AsyncHandle asyncHandle = null
)

Function AddFieldFromExpressionAsync ( 
	name As String,
	expr As String,
	Optional asyncHandle As AsyncHandle = Nothing
) As Task(Of Boolean)

name: Type: SystemString
Name of the field.
expr: Type: SystemString
Expression value. It is not possible to use all aggregation functions. For example, you cannot add a field on the fly with an expression that uses the Sum or Count aggregation functions.
asyncHandle (Optional): Type: Qlik.EngineAsyncHandle
Handle to asyncronous method request