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XmlDocument::NodeChanging Event

Occurs when the Value of a node belonging to this document is about to be changed.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public:
 event XmlNodeChangedEventHandler^ NodeChanging {
	void add (XmlNodeChangedEventHandler^ value);
	void remove (XmlNodeChangedEventHandler^ value);
}

This event allows the user to do extra checking and, if necessary, throw an exception to stop the operation. If an exception is thrown the XmlDocument returns to its original state. This event only applies to nodes that have a value.

All nodes created by this document, whether or not they have been inserted into the document, are included in this event.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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