ValueExpressionParserTApplyDefaultsForTypeTValueExpressionAttribute(IEnumerablePropertyInfo, TypeRegistry) Method

Generates a delegate that will update an instance of type T applying any specified DefaultValueAttribute or TValueExpressionAttribute instances that are declared on the type T properties. Target T instance is accepted as the parameter to the returned delegate ActionT.

Definition

Namespace: Gemstone.Expressions.Model
Assembly: Gemstone.Expressions (in Gemstone.Expressions.dll) Version: 1.0.169 -- Release Build+7e19ae13fc8cb044bd1f384a021abae6dc5c1045

C#View Source Request Example

public static Action<T> ApplyDefaultsForType<TValueExpressionAttribute>(
	IEnumerable<PropertyInfo>? properties = null,
	TypeRegistry? typeRegistry = null
)
where TValueExpressionAttribute : Attribute, IValueExpressionAttribute

VBView Source Request Example

Public Shared Function ApplyDefaultsForType(Of TValueExpressionAttribute As {Attribute, IValueExpressionAttribute}) ( 
	Optional properties As IEnumerable(Of PropertyInfo) = Nothing,
	Optional typeRegistry As TypeRegistry = Nothing
) As Action(Of T)

C++View Source Request Example

public:
generic<typename TValueExpressionAttribute>
where TValueExpressionAttribute : Attribute, IValueExpressionAttribute
static Action<T>^ ApplyDefaultsForType(
	IEnumerable<PropertyInfo^>^ properties = nullptr, 
	TypeRegistry^ typeRegistry = nullptr
)

JavaScriptView Source Request Example

JavaScript does not support generic types or methods.

Parameters

properties IEnumerablePropertyInfo (Optional): Specific properties to target, or null to target all properties.
typeRegistry TypeRegistry (Optional): Type registry to use when parsing TValueExpressionAttribute instances, or null to use DefaultTypeRegistry.

Type Parameters

TValueExpressionAttribute: IValueExpressionAttribute parameter type.

Return Value

ActionT
Generated delegate that will update T instances with default values applied.

Remarks

This function is useful for generating a delegate to a compiled function that will update objects of type T where properties of the type of have been decorated with DefaultValueAttribute or TValueExpressionAttribute attributes. The updated object will automatically have applied any defined default values as specified by the encountered attributes.

Note

This function will assign evaluated expression values to properties in an existing model.