ValueExpressionParserTUpdateExpressionsForTypeTValueExpressionAttribute(IEnumerablePropertyInfo, TypeRegistry) Method

Generates a delegate that will execute expression assignments on an instance of type T where expressions are TValueExpressionAttribute instances that are declared on the type T properties. Target T instance is accepted as the parameter to the returned delegate ActionT.

Namespace: GSF.ComponentModel
Assembly: GSF.Core (in GSF.Core.dll) Version: 2.4.181-beta

Syntax

C++

JavaScript

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

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

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

static member UpdateExpressionsForType : 
        ?properties : IEnumerable<PropertyInfo> * 
        ?typeRegistry : TypeRegistry 
(* Defaults:
        let _properties = defaultArg properties null
        let _typeRegistry = defaultArg typeRegistry null
*)
-> Action<'T>  when 'TValueExpressionAttribute : Attribute and IValueExpressionAttribute

JavaScript does not support generic types or methods.

View Source

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 execute expression assignments on T instances.

Remarks

This function is useful for generating a delegate to a compiled function that will execute expression assignments on objects of type T where properties of the type of have been decorated with TValueExpressionAttribute attributes. Note that the expression in the TValueExpressionAttribute attribute is expected to evaluate to a property such that it can be assigned the target type T property value.

Note
This function will assign current modeled property values back to expressions, this is often useful when a model is being synchronized to an external source, e.g., user interface elements.

Reference

ValueExpressionParserT Class

UpdateExpressionsForType Overload

GSF.ComponentModel Namespace