INSPredicateValidating.VisitExpressionKeyPath Method

Definition

Namespace:: Foundation

Assembly:: Microsoft.iOS.dll

Assembly:: Microsoft.MacCatalyst.dll

Assembly:: Microsoft.macOS.dll

Assembly:: Microsoft.tvOS.dll

Important

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Validates whether the specified key path expression is allowed to be evaluated.

[Foundation.Export("visitExpressionKeyPath:scope:key:error:")]
[Foundation.OptionalMember]
[ObjCRuntime.BindingImpl(ObjCRuntime.BindingImplOptions.GeneratedCode | ObjCRuntime.BindingImplOptions.Optimizable)]
public virtual bool VisitExpressionKeyPath(Foundation.NSExpression expression, string? scope, string? key, out Foundation.NSError? error);

[<Foundation.Export("visitExpressionKeyPath:scope:key:error:")>]
[<Foundation.OptionalMember>]
[<ObjCRuntime.BindingImpl(ObjCRuntime.BindingImplOptions.GeneratedCode | ObjCRuntime.BindingImplOptions.Optimizable)>]
abstract member VisitExpressionKeyPath : Foundation.NSExpression * string * string * NSError -> bool
override this.VisitExpressionKeyPath : Foundation.NSExpression * string * string * NSError -> bool

Parameters

expression: NSExpression

The key path NSExpression to validate.

scope: String

The scope component of the key path, or null if no scope is specified.

key: String

The key component of the key path, or null if no key is specified.

error: NSError

When this method returns false, contains an NSError describing why the key path expression was rejected; otherwise, null.

Returns

Boolean

true if the key path expression is valid and allowed; otherwise, false.

Attributes: ExportAttribute OptionalMemberAttribute BindingImplAttribute

Applies to