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System::Xml::XmlNodeChangedEventArgs Class Reference

Provides data for the XmlDocument::NodeChanged, XmlDocument::NodeChanging, XmlDocument::NodeInserted, XmlDocument::NodeInserting, XmlDocument::NodeRemoved and XmlDocument::NodeRemoving events. More...

Inherits System::EventArgs.

Public Types

using Ptr = SharedPtr< XmlNodeChangedEventArgs >
 An alias for shared pointer to an instance of this class. More...
 
- Public Types inherited from System::Object
typedef SmartPtr< Objectptr
 Alias for smart pointer type. More...
 

Public Member Functions

XmlNodeChangedAction get_Action ()
 Returns a value indicating what type of node change event is occurring. More...
 
SharedPtr< XmlNodeget_Node ()
 Returns the XmlNode that is being added, removed or changed. More...
 
SharedPtr< XmlNodeget_OldParent ()
 Returns the value of the XmlNode::get_ParentNode before the operation began. More...
 
SharedPtr< XmlNodeget_NewParent ()
 Returns the value of the XmlNode::get_ParentNode after the operation completes. More...
 
String get_OldValue ()
 Returns the original value of the node. More...
 
String get_NewValue ()
 Returns the new value of the node. More...
 
 XmlNodeChangedEventArgs (const SharedPtr< XmlNode > &node, const SharedPtr< XmlNode > &oldParent, const SharedPtr< XmlNode > &newParent, const String &oldValue, const String &newValue, XmlNodeChangedAction action)
 Initializes a new instance of the XmlNodeChangedEventArgs class. More...
 
- Public Member Functions inherited from System::EventArgs
 EventArgs ()
 Constructor. More...
 
- Public Member Functions inherited from System::Object
 Object ()
 Creates object. Initializes all internal data structures. More...
 
virtual ~Object ()
 Destroys object. Frees all internal data structures. More...
 
 Object (Object const &x)
 Copy constructor. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
Objectoperator= (Object const &x)
 Assignment operator. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
ObjectSharedRefAdded ()
 Increments shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
int SharedRefRemovedSafe ()
 Decrements and returns shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
int RemovedSharedRefs (int count)
 Decreases shared reference count by specified value. More...
 
Detail::SmartPtrCounter * WeakRefAdded ()
 Increments weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
void WeakRefRemoved ()
 Decrements weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...
 
Detail::SmartPtrCounter * GetCounter ()
 Gets reference counter data structure associated with the object. More...
 
int SharedCount () const
 Gets current value of shared reference counter. More...
 
void Lock ()
 Implements C# lock() statement locking. Call directly or use LockContext sentry object. More...
 
void Unlock ()
 Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. More...
 
virtual bool Equals (ptr obj)
 Compares objects using C# Object.Equals semantics. More...
 
virtual int32_t GetHashCode () const
 Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. More...
 
virtual String ToString () const
 Analog of C# Object.ToString() method. Enables converting custom objects to string. More...
 
virtual ptr MemberwiseClone () const
 Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. More...
 
virtual const TypeInfoGetType () const
 Gets actual type of object. Analog of C# System.Object.GetType() call. More...
 
virtual bool Is (const TypeInfo &targetType) const
 Check if object represents an instance of type described by targetType. Analog of C# 'is' operator. More...
 
virtual void SetTemplateWeakPtr (uint32_t argument)
 Set n'th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. More...
 
virtual bool FastCast (const Details::FastRttiBase &helper, void **out_ptr) const
 For internal purposes only. More...
 
template<>
bool ReferenceEquals (String const &str, std::nullptr_t)
 Specialization of Object::ReferenceEquals for case of string and nullptr. More...
 
template<>
bool ReferenceEquals (String const &str1, String const &str2)
 Specialization of Object::ReferenceEquals for case of strings. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from System::Object
static bool ReferenceEquals (ptr const &objA, ptr const &objB)
 Compares objects by reference. More...
 
template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type ReferenceEquals (T const &objA, T const &objB)
 Compares objects by reference. More...
 
template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type ReferenceEquals (T const &objA, std::nullptr_t)
 Reference-compares value type object with nullptr. More...
 
template<typename T1 , typename T2 >
static std::enable_if< IsSmartPtr< T1 >::value &&IsSmartPtr< T2 >::value, bool >::type Equals (T1 const &objA, T2 const &objB)
 Compares reference type objects in C# style. More...
 
template<typename T1 , typename T2 >
static std::enable_if<!IsSmartPtr< T1 >::value &&!IsSmartPtr< T2 >::value, bool >::type Equals (T1 const &objA, T2 const &objB)
 Compares value type objects in C# style. More...
 
static const TypeInfoType ()
 Implements C# typeof(System.Object) construct. More...
 
template<>
bool Equals (float const &objA, float const &objB)
 Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...
 
template<>
bool Equals (double const &objA, double const &objB)
 Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. More...
 
- Static Public Attributes inherited from System::EventArgs
static EventArgsPtr Empty
 A static member that represents an "empty" EventArgs shared pointer (null-pointer). More...
 

Detailed Description

Provides data for the XmlDocument::NodeChanged, XmlDocument::NodeChanging, XmlDocument::NodeInserted, XmlDocument::NodeInserting, XmlDocument::NodeRemoved and XmlDocument::NodeRemoving events.

Attention
Objects of this class should only be allocated using System::MakeObject() function. Never create instances of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument.

Member Typedef Documentation

◆ Ptr

An alias for shared pointer to an instance of this class.

Constructor & Destructor Documentation

◆ XmlNodeChangedEventArgs()

System::Xml::XmlNodeChangedEventArgs::XmlNodeChangedEventArgs ( const SharedPtr< XmlNode > &  node,
const SharedPtr< XmlNode > &  oldParent,
const SharedPtr< XmlNode > &  newParent,
const String oldValue,
const String newValue,
XmlNodeChangedAction  action 
)

Initializes a new instance of the XmlNodeChangedEventArgs class.

Parameters
nodeThe XmlNode that generated the event.
oldParentThe old parent XmlNode of the XmlNode that generated the event.
newParentThe new parent XmlNode of the XmlNode that generated the event.
oldValueThe old value of the XmlNode that generated the event.
newValueThe new value of the XmlNode that generated the event.
actionThe XmlNodeChangedAction.

Member Function Documentation

◆ get_Action()

XmlNodeChangedAction System::Xml::XmlNodeChangedEventArgs::get_Action ( )

Returns a value indicating what type of node change event is occurring.

Returns
One of the enumeration values that describes the node change event. The Action value does not differentiate between when the event occurred (before or after). You can create separate event handlers to handle both instances.

◆ get_NewParent()

SharedPtr<XmlNode> System::Xml::XmlNodeChangedEventArgs::get_NewParent ( )

Returns the value of the XmlNode::get_ParentNode after the operation completes.

Returns
The value of the ParentNode after the operation completes. This method returns nullptr if the node is being removed. For attribute nodes, this method returns the XmlAttribute::get_OwnerElement value.

◆ get_NewValue()

String System::Xml::XmlNodeChangedEventArgs::get_NewValue ( )

Returns the new value of the node.

Returns
The new value of the node. This method returns nullptr if the node is neither an attribute nor a text node, or if the node is being removed. If called in a XmlDocument::NodeChanging event, get_NewValue returns the value of the node if the change is successful. If called in a XmlDocument::NodeChanged event, get_NewValue returns the current value of the node.

◆ get_Node()

SharedPtr<XmlNode> System::Xml::XmlNodeChangedEventArgs::get_Node ( )

Returns the XmlNode that is being added, removed or changed.

Returns
The XmlNode that is being added, removed or changed; this method never returns nullptr.

◆ get_OldParent()

SharedPtr<XmlNode> System::Xml::XmlNodeChangedEventArgs::get_OldParent ( )

Returns the value of the XmlNode::get_ParentNode before the operation began.

Returns
The value of the ParentNode before the operation began. This method returns nullptr if the node did not have a parent. For attribute nodes, this method returns the XmlAttribute::get_OwnerElement value.

◆ get_OldValue()

String System::Xml::XmlNodeChangedEventArgs::get_OldValue ( )

Returns the original value of the node.

Returns
The original value of the node. This method returns nullptr if the node is neither an attribute nor a text node, or if the node is being inserted. If called in a XmlDocument::NodeChanging event, get_OldValue returns the current value of the node that will be replaced if the change is successful. If called in a XmlDocument::NodeChanged event, get_OldValue returns the value of node prior to the change.