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.

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> UpdateExpressionsForType<TValueExpressionAttribute>(
	IEnumerable<PropertyInfo>? properties = null,
	TypeRegistry? typeRegistry = null
)
where TValueExpressionAttribute : Attribute, IValueExpressionAttribute

VBView Source Request Example

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)

C++View Source Request Example

public:
generic<typename TValueExpressionAttribute>
where TValueExpressionAttribute : Attribute, IValueExpressionAttribute
static Action<T>^ UpdateExpressionsForType(
	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 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.