CriteriaOperator.GetCustomFunction(String) Method

Returns a registered custom function with the specified name.

Namespace: DevExpress.XamarinForms.Core.Filtering

Assembly: DevExpress.XamarinForms.Core.dll

NuGet Package: DevExpress.XamarinForms.Core

Declaration

public static ICustomFunctionOperator GetCustomFunction(
    string functionName
)

Parameters

Name	Type	Description
functionName	String	The name of a function to return.

Returns

Type	Description
ICustomFunctionOperator	The custom function.

Remarks

Note that all custom functions the method can return must be registered via the CriteriaOperator.RegisterCustomFunction or CriteriaOperator.RegisterCustomFunctions method.

You can use the CriteriaOperator.UnregisterCustomFunction(String) or CriteriaOperator.UnregisterCustomFunction(ICustomFunctionOperator) to cancel function registration and this method will not return a function.