NSExpression Class

Reference

Definition

Namespace:: Foundation

Assembly:: Xamarin.iOS.dll

Assembly:: Xamarin.Mac.dll

Important

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Encapsulates an expression to be used with a NSComparisonPredicates.

[Foundation.Register("NSExpression", true)]
public class NSExpression : Foundation.NSObject, Foundation.INSCopying, Foundation.INSSecureCoding, IDisposable

type NSExpression = class
    inherit NSObject
    interface INSCoding
    interface INativeObject
    interface IDisposable
    interface INSCopying
    interface INSSecureCoding

Inheritance: Object

NSObject
NSExpression

Derived: CoreData.NSFetchRequestExpression

Attributes: RegisterAttribute

Implements: INSCoding INSCopying INSSecureCoding INativeObject IDisposable

Constructors

NSExpression(IntPtr)	A constructor used when creating managed representations of unmanaged objects; Called by the runtime.
NSExpression(NSCoder)	A constructor that initializes the object from the data stored in the unarchiver object.
NSExpression(NSExpressionType)
NSExpression(NSObjectFlag)	Constructor to call on derived classes to skip initialization and merely allocate the object.

Properties

Arguments	The arguments to this expression.
Block
Class	(Inherited from NSObject)
ClassHandle	The handle for this class.
Collection	The collection of expressions in an aggregate expression, or the collection element of a subquery.
ConstantValue	The constant value of this expression.
DebugDescription	A developer-meaningful description of this object. (Inherited from NSObject)
Description	Description of the object, the Objective-C version of ToString. (Inherited from NSObject)
ExpressionForEvaluatedObject	A static method that creates a new expression that represents the object being evaluated.
ExpressionType	The expression type of this expression.
FalseExpression
Function	The function for this expression. Raises an exception if not applicable.
Handle	Handle (pointer) to the unmanaged object representation. (Inherited from NSObject)
IsDirectBinding	(Inherited from NSObject)
IsProxy	(Inherited from NSObject)
KeyPath	The key path for this expression. Raises an exception if not applicable.
LeftExpression	The left expression of an aggregate expression. Raises an exception if not applicable.
Operand	The operand of the expression. Raises an exception if not applicable.
Predicate	The predicate for a subquery expression. Raises an exception if not applicable.
RetainCount	Returns the current Objective-C retain count for the object. (Inherited from NSObject)
RightExpression	The right expression of an aggregate expression. Raises an exception if not applicable.
Self	(Inherited from NSObject)
Superclass	(Inherited from NSObject)
SuperHandle	Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject)
TrueExpression
Variable	The variable for the expression. Raises an exception if not applicable.
Zone	(Inherited from NSObject)

Methods

AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr)	Registers an object for being observed externally (using NSString keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject)
AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr)	Registers an object for being observed externally (using string keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject)
AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>)	Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject)
AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>)	Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject)
AllowEvaluation()	Forces an expression to be allowed to be evaluated. Expressions read from archives are not initially trusted.
AwakeFromNib()	Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib(). (Inherited from NSObject)
BeginInvokeOnMainThread(Action)	(Inherited from NSObject)
BeginInvokeOnMainThread(Selector, NSObject)	Invokes asynchrously the specified code on the main UI thread. (Inherited from NSObject)
Bind(NSString, NSObject, String, NSDictionary)	(Inherited from NSObject)
Bind(String, NSObject, String, NSDictionary)	Obsolete. (Inherited from NSObject)
BindingInfo(String)	Obsolete. (Inherited from NSObject)
BindingOptionDescriptions(String)	Obsolete. (Inherited from NSObject)
BindingValueClass(String)	Obsolete. (Inherited from NSObject)
CommitEditing()	(Inherited from NSObject)
CommitEditing(NSObject, Selector, IntPtr)	(Inherited from NSObject)
ConformsToProtocol(IntPtr)	Invoked to determine if this object implements the specified protocol. (Inherited from NSObject)
Copy()	Performs a copy of the underlying Objective-C object. (Inherited from NSObject)
Copy(NSZone)	Performs a copy of the underlying Objective-C object.
DangerousAutorelease()	(Inherited from NSObject)
DangerousRelease()	(Inherited from NSObject)
DangerousRetain()	(Inherited from NSObject)
DidChange(NSKeyValueChange, NSIndexSet, NSString)	Indicates a change occurred to the indexes for a to-many relationship. (Inherited from NSObject)
DidChange(NSString, NSKeyValueSetMutationKind, NSSet)	(Inherited from NSObject)
DidChangeValue(String)	Indicates that a change occurred on the specified key. (Inherited from NSObject)
Dispose()	Releases the resources used by the NSObject object. (Inherited from NSObject)
Dispose(Boolean)	Releases the resources used by the NSObject object. (Inherited from NSObject)
DoesNotRecognizeSelector(Selector)	Indicates that this object does not recognize the specified selector. (Inherited from NSObject)
EncodeTo(NSCoder)	Encodes the state of the object on the provided encoder
Equals(NSObject)	(Inherited from NSObject)
Equals(Object)	(Inherited from NSObject)
EvaluateWith(NSObject, NSMutableDictionary)
ExposedBindings()	(Inherited from NSObject)
ExpressionValueWithObject(NSObject, NSMutableDictionary)	Obsolete. Evaluates the expression using the specified object and context.
FromAggregate(NSExpression[])	An aggregate expression containing the specified subexpressions.
FromAnyKey()	An expression that represents any key for a Spotlight query.
FromConditional(NSPredicate, NSExpression, NSExpression)
FromConstant(NSObject)	An expression that represents a constant value.
FromFormat(String, NSExpression[])	Obsolete. An expression from the specified expression format, with the specified parameters.
FromFormat(String, NSObject[])
FromFormat(String)
FromFunction(NSExpression, String, NSExpression[])
FromFunction(NSExpressionCallbackHandler, NSExpression[])
FromFunction(NSExpressionHandler, NSExpression[])	Obsolete. An expression created by executing the specified NSExpressionHandler target with the specified parameters.
FromFunction(String, NSExpression[])
FromIntersectSet(NSExpression, NSExpression)	An expression that represents the intersection of an expression that evaluates as an NSSet (left) and an expression that evaluates as a collection (right).
FromKeyPath(String)	An expression generated by invoking ValueForKeyPath on the specified keyPath.
FromMinusSet(NSExpression, NSExpression)	An expression that subtracts an expression that evaluates as a collection (right) from an expression that evaluates as a set (left).
FromSubquery(NSExpression, String, NSObject)	An expression that filters a given variable by applying a predicate, returning those that evaluate as true.
FromUnionSet(NSExpression, NSExpression)	An expression that represents the union of an expression that evaluates as an expression (left) with an expression that evaluates as a collection (right).
FromVariable(String)	An expression that extracts the specified variable from the variable bindings dictionary.
GetBindingInfo(NSString)	(Inherited from NSObject)
GetBindingOptionDescriptions(NSString)	(Inherited from NSObject)
GetBindingValueClass(NSString)	(Inherited from NSObject)
GetDictionaryOfValuesFromKeys(NSString[])	Retrieves the values of the specified keys. (Inherited from NSObject)
GetHashCode()	Generates a hash code for the current instance. (Inherited from NSObject)
GetMethodForSelector(Selector)	(Inherited from NSObject)
GetNativeField(String)	Obsolete. (Inherited from NSObject)
GetNativeHash()	(Inherited from NSObject)
Init()	(Inherited from NSObject)
InitializeHandle(IntPtr, String)	(Inherited from NSObject)
InitializeHandle(IntPtr)	(Inherited from NSObject)
Invoke(Action, Double)	(Inherited from NSObject)
Invoke(Action, TimeSpan)	(Inherited from NSObject)
InvokeOnMainThread(Action)	(Inherited from NSObject)
InvokeOnMainThread(Selector, NSObject)	Invokes synchrously the specified code on the main UI thread. (Inherited from NSObject)
IsEqual(NSObject)	(Inherited from NSObject)
IsKindOfClass(Class)	(Inherited from NSObject)
IsMemberOfClass(Class)	(Inherited from NSObject)
MarkDirty()	Promotes a regular peer object (IsDirectBinding is true) into a toggleref object. (Inherited from NSObject)
MutableCopy()	Creates a mutable copy of the specified NSObject. (Inherited from NSObject)
ObjectDidEndEditing(NSObject)	(Inherited from NSObject)
ObserveValue(NSString, NSObject, NSDictionary, IntPtr)	Indicates that the value at the specified keyPath relative to this object has changed. (Inherited from NSObject)
PerformSelector(Selector, NSObject, Double, NSString[])	(Inherited from NSObject)
PerformSelector(Selector, NSObject, Double)	Invokes the selector on the current instance and if the `obj` is not null, it passes this as its single parameter. (Inherited from NSObject)
PerformSelector(Selector, NSObject, NSObject)	(Inherited from NSObject)
PerformSelector(Selector, NSObject)	(Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[])	(Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean)	(Inherited from NSObject)
PerformSelector(Selector)	(Inherited from NSObject)
PrepareForInterfaceBuilder()	(Inherited from NSObject)
RemoveObserver(NSObject, NSString, IntPtr)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject)
RemoveObserver(NSObject, NSString)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject)
RemoveObserver(NSObject, String, IntPtr)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject)
RemoveObserver(NSObject, String)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject)
RespondsToSelector(Selector)	Whether this object recognizes the specified selector. (Inherited from NSObject)
SetNativeField(String, NSObject)	Obsolete. (Inherited from NSObject)
SetNilValueForKey(NSString)	Sets the value of the specified key to null. (Inherited from NSObject)
SetValueForKey(NSObject, NSString)	Sets the value of the property specified by the key to the specified value. (Inherited from NSObject)
SetValueForKeyPath(IntPtr, NSString)	A constructor used when creating managed representations of unmanaged objects; Called by the runtime. (Inherited from NSObject)
SetValueForKeyPath(NSObject, NSString)	Sets the value of a property that can be reached using a keypath. (Inherited from NSObject)
SetValueForUndefinedKey(NSObject, NSString)	Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject)
SetValuesForKeysWithDictionary(NSDictionary)	Sets the values of this NSObject to those in the specified dictionary. (Inherited from NSObject)
ToString()	Returns a string representation of the value of the current instance. (Inherited from NSObject)
Unbind(NSString)	(Inherited from NSObject)
Unbind(String)	Obsolete. (Inherited from NSObject)
ValueForKey(NSString)	Returns the value of the property associated with the specified key. (Inherited from NSObject)
ValueForKeyPath(NSString)	Returns the value of a property that can be reached using a keypath. (Inherited from NSObject)
ValueForUndefinedKey(NSString)	Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject)
WillChange(NSKeyValueChange, NSIndexSet, NSString)	Indicates that the values of the specified indices in the specified key are about to change. (Inherited from NSObject)
WillChange(NSString, NSKeyValueSetMutationKind, NSSet)	(Inherited from NSObject)
WillChangeValue(String)	Indicates that the value of the specified key is about to change. (Inherited from NSObject)

Extension Methods

ObjectDidBeginEditing(NSObject, INSEditor)
ObjectDidEndEditing(NSObject, INSEditor)
GetValidModes(NSObject, NSFontPanel)
ValidateToolbarItem(NSObject, NSToolbarItem)
GetDebugDescription(INSObjectProtocol)
AcceptsPreviewPanelControl(NSObject, QLPreviewPanel)
BeginPreviewPanelControl(NSObject, QLPreviewPanel)
EndPreviewPanelControl(NSObject, QLPreviewPanel)
GetAccessibilityCustomRotors(NSObject)	Gets the array of UIAccessibilityCustomRotor objects appropriate for `this` object.
SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[])	Sets the array of UIAccessibilityCustomRotor objects appropriate for `this` object.

Applies to

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