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.
Gemstone Expressions Library
Value
Generates a delegate that will execute expression assignments on an instance of type T
where expressions are TypeConvertedValueExpressionAttribute 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: 1.0.128 -- Release Build+cfed08c7efcabf54b006110ecd862a6bfcb7b819
Generated delegate that will execute expression assignments on T instances.
Assembly: Gemstone.Expressions (in Gemstone.Expressions.dll) Version: 1.0.128 -- Release Build+cfed08c7efcabf54b006110ecd862a6bfcb7b819
C#
public static Action<T> UpdateExpressions(
IEnumerable<PropertyInfo>? properties = null,
TypeRegistry? typeRegistry = null
)VB
Public Shared Function UpdateExpressions (
Optional properties As IEnumerable(Of PropertyInfo) = Nothing,
Optional typeRegistry As TypeRegistry = Nothing
) As Action(Of T)C++
public:
static Action<T>^ UpdateExpressions(
IEnumerable<PropertyInfo^>^ properties = nullptr,
TypeRegistry^ typeRegistry = nullptr
)JavaScript
Gemstone.Expressions.Model.ValueExpressionParser.UpdateExpressions = function(properties, typeRegistry);Parameters
- properties IEnumerablePropertyInfo (Optional)
- Specific properties to target, or null to target all properties.
- typeRegistry TypeRegistry (Optional)
- Type registry to use when parsing TypeConvertedValueExpressionAttribute instances, or null to use DefaultTypeRegistry.
Return Value
ActionTGenerated 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 TypeConvertedValueExpressionAttribute attributes. Note that the expression in the
TypeConvertedValueExpressionAttribute attribute is expected to evaluate to a property
such that it can be assigned the target type T property value.
This method is the inverse call for UpdateProperties(IEnumerablePropertyInfo, TypeRegistry).