XmlNode.ReplaceChild Method

Replaces the child node oldChild with newChild node.

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

abstract ReplaceChild : 
        newChild:XmlNode * 
        oldChild:XmlNode -> XmlNode  
override ReplaceChild : 
        newChild:XmlNode * 
        oldChild:XmlNode -> XmlNode


Type: System.Xml.XmlNode

The new node to put in the child list.

Type: System.Xml.XmlNode

The node being replaced in the list.

Return Value

Type: System.Xml.XmlNode
The node replaced.


This node is of a type that does not allow child nodes of the type of the newChild node.

The newChild is an ancestor of this node.


The newChild was created from a different document than the one that created this node.

This node is read-only.

The oldChild is not a child of this node.

If the newChild is already in the tree, it is first removed.

If the newChild was created from another document, you can use XmlDocument.ImportNode to import the node to the current document. The imported node can then be passed to the ReplaceChild method.

Notes to Inheritors

When overriding ReplaceChild in a derived class, in order for events to be raised correctly, you must call the ReplaceChild method of the base class.

The following example replaces the title element in the XML document.

No code example is currently available or this language may not be supported.

.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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