,System.Linq.Expressions.Expression,System.Linq.Expressions.Expression[],System.Func,System.Action{System.Object,System.Object,System.Object[]},System.Func{System.Type,System.Type,System.Func{System.Object,System.Object,System.Object[],System.Object}})}

IPropertyBindingExpressionCompiler.CreateChainedSetObservable(TTarget?, IObservable, Expression, Expression[], Func, Action, Func?>) method¶

Defined in

Type: IPropertyBindingExpressionCompiler Namespace: ReactiveUI Assembly: ReactiveUI.Core.dll

Applies to

net10.0, net10.0-maccatalyst26.0, net10.0-desktop1.0, net10.0-browserwasm1.0, net10.0-tvos26.0, net10.0-windows10.0.19041, net10.0-macos26.0, net10.0-ios26.0, net10.0-android36.0, net9.0, net9.0-tvos18.0, net9.0-macos15.0, net9.0-maccatalyst18.0, net9.0-windows10.0.19041, net9.0-ios18.0, net9.0-desktop1.0, net8.0, net8.0-windows10.0.19041, net8.0-ios18.0, net8.0-maccatalyst18.0, net8.0-macos15.0, net8.0-tvos18.0, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.5, netstandard2.1, net481, net462, net471

IObservable<(bool ShouldEmit, TValue Value)> CreateChainedSetObservable<TTarget, TValue, TObs>(TTarget? target, IObservable<TObs> observedChanged, Expression viewExpression, Expression[] hostExpressionChain, Func<object?, object?[]?, object?> getter, Action<object?, object?, object?[]?> setter, Func<Type?, Type?, Func<object?, object?, object?[]?, object?>?> getSetConverter) where TTarget : class

Summary: Creates an observable for chained member binding (with intermediate host changes).

Type parameters

Name	Description
`TTarget`	The target object type.
`TValue`	The property value type.
`TObs`	The observed change type.

Parameters

Name	Type	Description
`target`	`TTarget?`	The target object instance.
`observedChanged`	IObservable	The observable tracking property changes.
`viewExpression`	Expression	The view expression.
`hostExpressionChain`	`Expression[]`	The host expression chain.
`getter`	Func	The compiled getter.
`setter`	Action	The compiled setter.
`getSetConverter`	Func?>	Optional set-method converter resolver.

Returns: IObservable<(bool ShouldEmit, TValue Value)> -- An observable that emits tuples of (shouldEmit, value) when the property changes.

Remarks

        Chained set observables handle complex property paths where intermediate objects can change.
        They track host changes and replay values when the host (e.g., ViewModel) changes.