ToNullStringAttribute.md

ToNullStringAttribute ..

Used to mutate the a string to null when its value is empty or whitespace.

Namespace: Dado.ComponentModel.DataMutations
Implements: Dado.ComponentModel.DataMutations.MutationAttribute (in Dado.ComponentModel.Mutations)

Syntax

[AttributeUsage(AttributeTargets.Property)]
public class ToNullStringAttribute : MutationAttribute

Properties

Name	Description
Priority	Gets or sets a value indicating the priority that determines the order in which MutationAttributes are evaluated.
RequiresContext	A flag indicating the attribute requires a non-null MutationContext<T> to perform validation.

Methods

Name	Description
Mutate(Object, IMutationContext)	Mutates the given value according to this MutationAttribute.
MutateValue(Object, IMutationContext)	Implements the mutation logic for this ToNullStringAttribute.

Priority

Gets or sets a value indicating the priority that determines the order in which MutationAttributes are evaluated. Defaults to 30.

Syntax

public override int Priority { get; set; } = 30;

Type

System.Int32

MutateValue(Object, IMutationContext)

Implements the mutation logic for this ToNullStringAttribute.

Syntax

protected override object MutateValue(
	object value,
	IMutationContext context
)

Returns

null when the value is empty or whitespace, otherwise the specified value.

Parameters

value

Type: System.Object
The value to mutate.

context

Type: Dado.ComponentModel.DataMutations.IMutationContext
Describes the value being mutated and provides services and context for mutation.