Class XmlHelper

The XmlHelper class contains general helper methods for working with xml in umbraco.

Inheritance

System.Object

Namespace: Umbraco.Cms.Core.Xml

Assembly: Umbraco.Core.dll

Syntax

public class XmlHelper

Methods

View Source

AddAttribute(XmlDocument, String, String)

creates a XmlAttribute with the specified name and value

Declaration

public static XmlAttribute AddAttribute(XmlDocument xd, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xd	The xmldocument.
System.String	name	The name of the attribute.
System.String	value	The value of the attribute.

Returns

Type	Description
System.Xml.XmlAttribute	a XmlAttribute

View Source

AddCDataNode(XmlDocument, String, String)

Creates a cdata XmlNode with the specified name and value

Declaration

public static XmlNode AddCDataNode(XmlDocument xd, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xd	The xmldocument.
System.String	name	The node name.
System.String	value	The node value.

Returns

Type	Description
System.Xml.XmlNode	A XmlNode

View Source

AddTextNode(XmlDocument, String, String)

Creates a text XmlNode with the specified name and value

Declaration

public static XmlNode AddTextNode(XmlDocument xd, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xd	The xmldocument.
System.String	name	The node name.
System.String	value	The node value.

Returns

Type	Description
System.Xml.XmlNode	a XmlNode

View Source

CouldItBeXml(String)

Determines whether the specified string appears to be XML.

Declaration

public static bool CouldItBeXml(string xml)

Parameters

Type	Name	Description
System.String	xml	The XML string.

Returns

Type	Description
System.Boolean	`true` if the specified string appears to be XML; otherwise, `false`.

View Source

CreateXPathDocument(String)

Creates a new XPathDocument from an xml string.

Declaration

public static XPathDocument CreateXPathDocument(string xml)

Parameters

Type	Name	Description
System.String	xml	The xml string.

Returns

Type	Description
System.Xml.XPath.XPathDocument	An `XPathDocument` created from the xml string.

View Source

GetAttributesFromElement(String)

Return a dictionary of attributes found for a string based tag

Declaration

public static Dictionary<string, string> GetAttributesFromElement(string tag)

Parameters

Type	Name	Description
System.String	tag

Returns

Type	Description
Umbraco.Cms.Core.Dictionary<System.String, System.String>

View Source

GetNodeValue(XmlNode)

Gets the value of a XmlNode

Declaration

public static string GetNodeValue(XmlNode n)

Parameters

Type	Name	Description
System.Xml.XmlNode	n	The XmlNode.

Returns

Type	Description
System.String	the value as a string

View Source

IsXmlWhitespace(String)

Gets a value indicating whether a specified string contains only xml whitespace characters.

Declaration

public static bool IsXmlWhitespace(string s)

Parameters

Type	Name	Description
System.String	s	The string.

Returns

Type	Description
System.Boolean	`true` if the string contains only xml whitespace characters.

Remarks

As per XML 1.1 specs, space, \t, \r and \n.

View Source

OpenAsXmlDocument(String, IHostingEnvironment)

Opens a file as a XmlDocument.

Declaration

public static XmlDocument OpenAsXmlDocument(string filePath, IHostingEnvironment hostingEnvironment)

Parameters

Type	Name	Description
System.String	filePath	The relative file path. ie. /config/umbraco.config
IHostingEnvironment	hostingEnvironment

Returns

Type	Description
System.Xml.XmlDocument	Returns a XmlDocument class

View Source

SetAttribute(XmlDocument, XmlNode, String, String)

Creates or sets an attribute on the XmlNode if an Attributes collection is available

Declaration

public static void SetAttribute(XmlDocument xml, XmlNode n, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xml
System.Xml.XmlNode	n
System.String	name
System.String	value

View Source

SetCDataNode(XmlDocument, XmlNode, String, String)

Sets or Creates a cdata XmlNode with the specified name and value

Declaration

public static XmlNode SetCDataNode(XmlDocument xd, XmlNode parent, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xd	The xmldocument.
System.Xml.XmlNode	parent	The node to set or create the child text node on
System.String	name	The node name.
System.String	value	The node value.

Returns

Type	Description
System.Xml.XmlNode	a XmlNode

View Source

SetInnerXmlNode(XmlDocument, XmlNode, String, String)

Sets or creates an Xml node from its inner Xml.

Declaration

public static XmlNode SetInnerXmlNode(XmlDocument xd, XmlNode parent, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xd	The xmldocument.
System.Xml.XmlNode	parent	The node to set or create the child text node on
System.String	name	The node name.
System.String	value	The node inner Xml.

Returns

Type	Description
System.Xml.XmlNode	a XmlNode

View Source

SetTextNode(XmlDocument, XmlNode, String, String)

Sets or Creates a text XmlNode with the specified name and value

Declaration

public static XmlNode SetTextNode(XmlDocument xd, XmlNode parent, string name, string value)

Parameters

Type	Name	Description
System.Xml.XmlDocument	xd	The xmldocument.
System.Xml.XmlNode	parent	The node to set or create the child text node on
System.String	name	The node name.
System.String	value	The node value.

Returns

Type	Description
System.Xml.XmlNode	a XmlNode

View Source

SortNode(XmlNode, String, XmlNode, Func<XmlNode, Int32>)

Sorts a single child node of a parentNode.

Declaration

public static bool SortNode(XmlNode parentNode, string childNodesXPath, XmlNode node, Func<XmlNode, int> orderBy)

Parameters

Type	Name	Description
System.Xml.XmlNode	parentNode	The parent node.
System.String	childNodesXPath	An XPath expression to select children of `parentNode` to sort.
System.Xml.XmlNode	node	The child node to sort.
Func<System.Xml.XmlNode, System.Int32>	orderBy	A function returning the value to order the nodes by.

Returns

Type	Description
System.Boolean	A value indicating whether sorting was needed.

Remarks

Assuming all nodes but node are sorted, this will move the node to the right position without moving all the nodes (as SortNodes would do) - should improve perfs.

View Source

SortNodes(XmlNode, String, Func<XmlNode, Int32>)

Sorts the children of a parentNode.

Declaration

public static void SortNodes(XmlNode parentNode, string childNodesXPath, Func<XmlNode, int> orderBy)

Parameters

Type	Name	Description
System.Xml.XmlNode	parentNode	The parent node.
System.String	childNodesXPath	An XPath expression to select children of `parentNode` to sort.
Func<System.Xml.XmlNode, System.Int32>	orderBy	A function returning the value to order the nodes by.

View Source

TryCreateXPathDocument(String, out XPathDocument)

Tries to create a new XPathDocument from an xml string.

Declaration

public static bool TryCreateXPathDocument(string xml, out XPathDocument doc)

Parameters

Type	Name	Description
System.String	xml	The xml string.
System.Xml.XPath.XPathDocument	doc	The XPath document.

Returns

Type	Description
System.Boolean	A value indicating whether it has been possible to create the document.

View Source

TryCreateXPathDocumentFromPropertyValue(Object, out XPathDocument)

Tries to create a new XPathDocument from a property value.

Declaration

public static bool TryCreateXPathDocumentFromPropertyValue(object value, out XPathDocument doc)

Parameters

Type	Name	Description
System.Object	value	The value of the property.
System.Xml.XPath.XPathDocument	doc	The XPath document.

Returns

Type	Description
System.Boolean	A value indicating whether it has been possible to create the document.

Remarks

The value can be anything... Performance-wise, this is bad.