ReactiveNotifyPropertyChangedMixin.SubscribeToExpressionChain(TSender?, Expression?) method¶

Defined in

Type: ReactiveNotifyPropertyChangedMixin Namespace: ReactiveUI.Binding.ObservableForProperty Assembly: ReactiveUI.Binding.dll

Applies to

net10.0, net10.0-browserwasm1.0, net10.0-desktop1.0, net9.0, net9.0-browserwasm1.0, net9.0-desktop1.0, net8.0, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.2, net8.0-macos14.5, net8.0-tvos17.2, netstandard2.1, net462, net481

Overloads¶

1. public static IObservable<IObservedChange<TSender, TValue>> SubscribeToExpressionChain<TSender, TValue>(this TSender? source, Expression? expression)
2. public static IObservable<IObservedChange<TSender, TValue>> SubscribeToExpressionChain<TSender, TValue>(this TSender? source, Expression? expression, bool skipInitial)
3. public static IObservable<IObservedChange<TSender, TValue>> SubscribeToExpressionChain<TSender, TValue>(this TSender? source, Expression? expression, bool beforeChange, bool skipInitial, bool isDistinct)

1. Overload¶

Attributes: [RequiresUnreferencedCode("Evaluates expression-based member chains via reflection; members may be trimmed.")]

public static IObservable<IObservedChange<TSender, TValue>> SubscribeToExpressionChain<TSender, TValue>(this TSender? source, Expression? expression)

View source

Summary: Subscribes to an expression chain, observing after-change, emitting the initial value, with distinct filtering.

Type parameters

Name	Description
`TSender`	The type of the origin of the expression chain.
`TValue`	The end value we want to subscribe to.

Parameters

Name	Type	Description
`source`	`TSender?`	The object where we start the chain.
`expression`	Expression?	An expression which will point towards the property.

Returns: IObservable> -- An observable which notifies about observed changes.

2. Overload¶

Attributes: [RequiresUnreferencedCode("Evaluates expression-based member chains via reflection; members may be trimmed.")]

public static IObservable<IObservedChange<TSender, TValue>> SubscribeToExpressionChain<TSender, TValue>(this TSender? source, Expression? expression, bool skipInitial)

View source

Summary: Subscribes to an expression chain, observing after-change with distinct filtering and a configurable initial value.

Type parameters

Name	Description
`TSender`	The type of the origin of the expression chain.
`TValue`	The end value we want to subscribe to.

Parameters

Name	Type	Description
`source`	`TSender?`	The object where we start the chain.
`expression`	Expression?	An expression which will point towards the property.
`skipInitial`	bool	If we don't want to get a notification about the default value of the property.

Returns: IObservable> -- An observable which notifies about observed changes.

3. Overload¶

Attributes: [RequiresUnreferencedCode("Evaluates expression-based member chains via reflection; members may be trimmed.")]

public static IObservable<IObservedChange<TSender, TValue>> SubscribeToExpressionChain<TSender, TValue>(this TSender? source, Expression? expression, bool beforeChange, bool skipInitial, bool isDistinct)

View source

Summary: Creates an observable which will subscribe to each property and sub-property specified in the Expression, providing updates to the last value in the chain.

Type parameters

Name	Description
`TSender`	The type of the origin of the expression chain.
`TValue`	The end value we want to subscribe to.

Parameters

Name	Type	Description
`source`	`TSender?`	The object where we start the chain.
`expression`	Expression?	An expression which will point towards the property.
`beforeChange`	bool	If we are interested in notifications before the property value is changed.
`skipInitial`	bool	If we don't want to get a notification about the default value of the property.
`isDistinct`	bool	If set to true, values are filtered with DistinctUntilChanged.

Returns: IObservable> -- An observable which notifies about observed changes.