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.NET Framework Class Library
ImageMetadata Class

Defines a base class for all metadata operations on imaging related APIs. This is an abstract class.

Namespace:   System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)
Syntax
Public MustInherit Class ImageMetadata _
	Inherits [%$TOPIC/ms619180_en-us_VS_110_2_0_0_0_0%]
public abstract class ImageMetadata : [%$TOPIC/ms619180_en-us_VS_110_2_0_1_0_0%]
public ref class ImageMetadata abstract : public [%$TOPIC/ms619180_en-us_VS_110_2_0_2_0_0%]
[<[%$TOPIC/ms619180_en-us_VS_110_2_0_3_0_0%]>]
type ImageMetadata =  
    class 
        inherit [%$TOPIC/ms619180_en-us_VS_110_2_0_3_0_1%] 
    end

The ImageMetadata type exposes the following members.

Properties
  NameDescription
Public property CanFreezeGets a value that indicates whether the object can be made unmodifiable. (Inherited from Freezable.)
Public property DependencyObjectTypeGets the DependencyObjectType that wraps the CLR type of this instance.  (Inherited from DependencyObject.)
Public property DispatcherGets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.)
Public property IsFrozenGets a value that indicates whether the object is currently modifiable. (Inherited from Freezable.)
Public property IsSealedGets a value that indicates whether this instance is currently sealed (read-only). (Inherited from DependencyObject.)
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Methods
  NameDescription
Public method CheckAccessDetermines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Public method ClearValue(DependencyProperty)Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier. (Inherited from DependencyObject.)
Public method ClearValue(DependencyPropertyKey)Clears the local value of a read-only property. The property to be cleared is specified by a DependencyPropertyKey. (Inherited from DependencyObject.)
Public method CloneCreates a modifiable clone of this ImageMetadata, making deep copies of this object's values. When copying dependency properties, this method copies resource references and data bindings (but they might no longer resolve) but not animations or their current values.
Protected method CloneCoreMakes the instance a clone (deep copy) of the specified Freezable using base (non-animated) property values. (Inherited from Freezable.)
Public method CloneCurrentValueCreates a modifiable clone (deep copy) of the Freezable using its current values. (Inherited from Freezable.)
Protected method CloneCurrentValueCoreMakes the instance a modifiable clone (deep copy) of the specified Freezable using current property values. (Inherited from Freezable.)
Public method CoerceValueCoerces the value of the specified dependency property. This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject. (Inherited from DependencyObject.)
Protected method CreateInstanceInitializes a new instance of the Freezable class. (Inherited from Freezable.)
Protected method CreateInstanceCoreWhen implemented in a derived class, creates a new instance of the Freezable derived class. (Inherited from Freezable.)
Public method EqualsDetermines whether a provided DependencyObject is equivalent to the current DependencyObject. (Inherited from DependencyObject.)
Protected method FinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method FreezeMakes the current object unmodifiable and sets its IsFrozen property to true. (Inherited from Freezable.)
Protected method FreezeCoreMakes the Freezable object unmodifiable or tests whether it can be made unmodifiable. (Inherited from Freezable.)
Public method GetAsFrozenCreates a frozen copy of the Freezable, using base (non-animated) property values. Because the copy is frozen, any frozen sub-objects are copied by reference. (Inherited from Freezable.)
Protected method GetAsFrozenCoreMakes the instance a frozen clone of the specified Freezable using base (non-animated) property values. (Inherited from Freezable.)
Public method GetCurrentValueAsFrozenCreates a frozen copy of the Freezable using current property values. Because the copy is frozen, any frozen sub-objects are copied by reference. (Inherited from Freezable.)
Protected method GetCurrentValueAsFrozenCoreMakes the current instance a frozen clone of the specified Freezable. If the object has animated dependency properties, their current animated values are copied. (Inherited from Freezable.)
Public method GetHashCodeGets a hash code for this DependencyObject. (Inherited from DependencyObject.)
Public method GetLocalValueEnumeratorCreates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject. (Inherited from DependencyObject.)
Public method GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method GetValueReturns the current effective value of a dependency property on this instance of a DependencyObject. (Inherited from DependencyObject.)
Public method InvalidatePropertyRe-evaluates the effective value for the specified dependency property (Inherited from DependencyObject.)
Protected method MemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Protected method OnChangedCalled when the current Freezable object is modified. (Inherited from Freezable.)
Protected method OnFreezablePropertyChanged(DependencyObject, DependencyObject)Ensures that appropriate context pointers are established for a DependencyObjectType data member that has just been set. (Inherited from Freezable.)
Protected method OnFreezablePropertyChanged(DependencyObject, DependencyObject, DependencyProperty)This member supports the Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code. (Inherited from Freezable.)
Protected method OnPropertyChangedOverrides the DependencyObject implementation of OnPropertyChanged to also invoke any Changed handlers in response to a changing dependency property of type Freezable. (Inherited from Freezable.)
Public method ReadLocalValueReturns the local value of a dependency property, if it exists. (Inherited from DependencyObject.)
Protected method ReadPreambleEnsures that the Freezable is being accessed from a valid thread. Inheritors of Freezable must call this method at the beginning of any API that reads data members that are not dependency properties. (Inherited from Freezable.)
Public method SetCurrentValueSets the value of a dependency property without changing its value source. (Inherited from DependencyObject.)
Public method SetValue(DependencyProperty, Object)Sets the local value of a dependency property, specified by its dependency property identifier. (Inherited from DependencyObject.)
Public method SetValue(DependencyPropertyKey, Object)Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property. (Inherited from DependencyObject.)
Protected method ShouldSerializePropertyReturns a value that indicates whether serialization processes should serialize the value for the provided dependency property. (Inherited from DependencyObject.)
Public method ToStringReturns a string that represents the current object. (Inherited from Object.)
Public method VerifyAccessEnforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Protected method WritePostscriptRaises the Changed event for the Freezable and invokes its OnChanged method. Classes that derive from Freezable should call this method at the end of any API that modifies class members that are not stored as dependency properties. (Inherited from Freezable.)
Protected method WritePreambleVerifies that the Freezable is not frozen and that it is being accessed from a valid threading context. Freezable inheritors should call this method at the beginning of any API that writes to data members that are not dependency properties. (Inherited from Freezable.)
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Events
  NameDescription
Public event ChangedOccurs when the Freezable or an object it contains is modified. (Inherited from Freezable.)
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Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Platforms

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.