CriteriaOperator.UnregisterCustomFunction(String) Method

Cancels registration of a custom function with the specified name.

Namespace: DevExpress.XamarinForms.Core.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

NuGet Package: DevExpress.XamarinForms.Core

Declaration

public static bool UnregisterCustomFunction(
    string functionName
)

Parameters

Name	Type	Description
functionName	String	The name of a custom function whose registration should be cancelled

Returns

Type	Description
Boolean	true, if a custom function whose name matches the functionName was removed from a collection of custom functions; otherwise, false.

Remarks

The CriteriaOperator.GetCustomFunction(String) and CriteriaOperator.GetCustomFunctions methods return registered functions.

You can register new functions via the CriteriaOperator.RegisterCustomFunction or CriteriaOperator.RegisterCustomFunctions method.