Xml C# WinRT Reference Documentation

Xml

A free non-validating XML parser component with encryption and compression features.

Object Creation

Chilkat.Xml obj = new Chilkat.Xml();

Properties

public bool Cdata {get; set; }

When True, causes an XML node's content to be encapsulated in a CDATA section.

Using CDATA in XML

public string Content {get; set; }

The content of the XML node. It is the text between the open and close tags, not including child nodes. For example:

<tag1>This is the content</tag1>

<tag2><child1>abc</child1><child2>abc</child2>This is the content</tag2>
Because the child nodes are not included, the content of "tag1" and "tag2" are both equal to "This is the content".

Content vs. Children: A common misconception explained.

Setting XML Tag and Content

public int ContentInt {get; set; }

Set/get the content as an integer.

public string DebugLogFilePath {get; set; }

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

public string DocType {get; set; }

The DOCTYPE declaration (if any) for the XML document.

Setting the XML DOCTYPE

public bool EmitBom {get; set; }

Introduced in version 9.5.0.44

If true, then emit the BOM (byte order mark, also known as a preamble) for encodings such as utf-8, utf-16, etc. The defautl value is false. This only applies when writing XML files. It does not apply when getting the XML as a string via the GetXml method.

public bool EmitCompact {get; set; }

Introduced in version 9.5.0.64

If true, then GetXml and GetXmlSb emit compact XML. The XML emitted has no unnecessary whitespace, incuding no end-of-lines (CR's and/or LF's). The default value is false, which maintains backward compatibility.

XML EmitCompact

public bool EmitXmlDecl {get; set; }

If true, then the XML declaration is emitted for methods (such as GetXml or SaveXml) where the XML is written to a file or string. The default value of this property is true. If set to false, the XML declaration is not emitted. (The XML declaration is the 1st line of an XML document starting with "<?xml ...".

public string Encoding {get; set; }

This is the encoding attribute in the XML declaration, such as "utf-8" or "iso-8859-1". The default is "utf-8". This property can be set from any node in the XML document and when set, causes the encoding property to be added to the XML declaration. Setting this property does not cause the document to be converted to a different encoding.

Calling any of the LoadXml* methods causes this property to be set to the charset found within the XML, if any. If no charset is specified within the loaded XML, then the LoadXml method resets this property to its default value of "utf-8".

public int I {get; set; }

Introduced in version 9.5.0.64

Used in tagPaths (and ChilkatPath). The value of this property is substituted for "i" in "[i]". See the example below..

Demonstrate the XML "I" Property

Demonstrate the XML I, J, and K Properties

public int J {get; set; }

Introduced in version 9.5.0.64

Used in tagPaths (and ChilkatPath). The value of this property is substituted for "j" in "[j]". See the example below..

Demonstrate the XML I, J, and K Properties

public int K {get; set; }

Introduced in version 9.5.0.64

Used in tagPaths (and ChilkatPath). The value of this property is substituted for "k" in "[k]". See the example below..

public string LastErrorHtml {get; }

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

public string LastErrorText {get; }

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

Concept of LastErrorText

LastErrorText Standard Information

public string LastErrorXml {get; }

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

public bool LastMethodSuccess {get; set; }

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of true indicates success, a value of false indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = true and failure = false.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to true. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

public int NumAttributes {get; }

The number of attributes. For example, the following node has 2 attributes:

<tag attr1="value1" attr2="value2"> This is the content</tag>

Methods for Getting Attributes

public int NumChildren {get; }

The number of direct child nodes contained under this XML node.

public bool SortCaseInsensitive {get; set; }

If true (or 1 for ActiveX), then all Sort* methods use case insensitive sorting.

public bool Standalone {get; set; }

This is the standalone attribute in the XML declaration. This property can be set from any node in the XML document. A value of true adds a standalone="yes" to the XML declaration:

<?xml ... standalone="yes">

public string Tag {get; set; }

The XML node's tag.

Setting XML Tag and Content

public int TreeId {get; }

Each tree (or XML document) has a unique TreeId. This is the ID of the tree, and can be used to determine if two Xml objects belong to the same tree.

public bool VerboseLogging {get; set; }

If set to true, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is false. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

public string Version {get; }

Version of the component/library, such as "9.5.0.63"

Methods

public string AccumulateTagContent(string tag, string skipTags);

Accumulates the content of all nodes having a specific tag into a single result string. SkipTags specifies a set of subtrees to be avoided. The skipTags are formatted as a string of tags delimited by vertical bar characters. All nodes in sub-trees rooted with a tag appearing in skipTags are not included in the result.

Returns null on failure

XML Accumulate Tag Content

public bool AddAttribute(string name, string value);

Adds an attribute to the calling node in the XML document. Returns True for success, and False for failure.

Returns true for success, false for failure.

Adding Attributes to an XML Node

AddAttribute - Insert New Attribute in XML Node

public bool AddAttributeInt(string name, int value);

Adds an integer attribute to a node.

Returns true for success, false for failure.

public bool AddChildTree(Xml tree);

Adds an entire subtree as a child. If the child was a subtree within another Xml document then the subtree is effectively transferred from one XML document to another.

Returns true for success, false for failure.

public void AddOrUpdateAttribute(string name, string value);

Adds an attribute to an XML node. If an attribute having the specified name already exists, the value is updated.

Update an XML Attribute

public void AddOrUpdateAttributeI(string name, int value);

Adds an integer attribute to an XML node. If an attribute having the specified name already exists, the value is updated.

public void AddStyleSheet(string styleSheet);

Adds a style sheet declaration to the XML document. The styleSheet should be a string such as:

<?xml-stylesheet href="mystyle.css" title="Compact" type="text/css"?>

public void AddToAttribute(string name, int amount);

Adds an integer amount to an integer attribute's value. If the attribute does not yet exist, this method behaves the same as AddOrUpdateAttributeI.

Update an XML Attribute

public void AddToChildContent(string tag, int amount);

Adds an integer value to the content of a child node.

public void AddToContent(int amount);

Adds an integer amount to the node's content.

public bool AppendToContent(string str);

Appends text to the content of an XML node

Returns true for success, false for failure.

public bool BEncodeContent(string charset, byte[] inData);

Sets the node's content with 8bit data that is in a specified multibyte character encoding such as utf-8, shift-jis, big5, etc. The data is first B-encoded and the content is set to be the B-encoded string. For example, if called with "Big5"for the charset, you would get a string that looks something like this: "=?Big5?B?pHCtsw==?=". The data is Base64-encoded and stored between the last pair of "?" delimiters. Use the DecodeContent method to retrieve the byte data from a B encoded string.

Returns true for success, false for failure.

public bool ChildContentMatches(string tagPath, string pattern, bool caseSensitive);

Return true if a child at the specified tagPath contains content that matches a wildcarded pattern. Otherwise returns false.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

public string ChilkatPath(string pathCmd);

Follows a series of commands to navigate through an XML document to return a piece of data or update the caller's reference to a new XML document node.

Note: This method not related to the XPath (XML Path) standard in any way.

The pathCmd is formatted as a series of commands separated by vertical bar characters, and terminated with a return-command:

    command|command|command|...|returnCommand

A command can be any of the following:

  1. TagName -- Navigate to the 1st direct child with the given tag.
  2. TagName[n] -- Navigate to the Nth direct child with the given tag.
  3. .. -- Navigate up to the parent
  4. TagName{Content} -- Navigate to the 1st direct child with the given tag having the exact content.
  5. /T/TagName -- Traverse the XML DOM tree (rooted at the caller) and navigate to the 1st node having the given tag.
  6. /C/TagName,ContentPattern -- Traverse the XML DOM tree (rooted at the caller) and navigate to the 1st node having the given tag with content that matches the ContentPattern. ContentPattern may use one or more asterisk ('*") characters to represent 0 or more of any character.
  7. /C/ContentPattern -- Traverse the XML DOM tree (rooted at the caller) and navigate to the 1st node having any tag with content that matches the ContentPattern. ContentPattern may use one or more asterisk ('*") characters to represent 0 or more of any character.
  8. /A/TagName,AttrName,AttrValuePattern -- Traverse the XML DOM tree (rooted at the caller) and navigate to the 1st node having the given tag, and attribute, with the attribute value that matches the AttrValuePattern. AttrValuePattern may use one or more asterisk ('*") characters to represent 0 or more of any character.
The returnCommand can be any of the following:
  1. * -- Return the Content of the node.
  2. (AttrName) -- Return the value of the given attribute.
  3. $ -- Update the caller's internal reference to be the node (arrived at by following the series of commands). Returns an empty string.

Returns null on failure

ChilkatPath Sample Code

Get XML Attribute Value by Path

public void Clear();

Removes all children, attributes, and content from the XML node. Resets the tag name to "unnamed".

public bool ContentMatches(string pattern, bool caseSensitive);

Return true if the node's content matches a wildcarded pattern.

public void Copy(Xml node);

Copies the tag, content, and attributes to the calling node.

public void CopyRef(Xml copyFromNode);

Discards the caller's current internal reference and copies the internal reference from copyFromNode. Effectively updates the caller node to point to the same node in the XML document as copyFromNode.

public byte[] DecodeContent();

Decodes a node's Q or B-encoded content string and returns the byte data.

Returns an empty byte array on failure

public string DecodeEntities(string str);

Utility method to decode HTML entities. It accepts a string containing (potentially) HTML entities and returns a string with the entities decoded.

Returns null on failure

public bool DecryptContent(string password);

Decrypts the content of an XML node that was previously 128-bit AES encrypted with the EncryptContent method.

Returns true for success, false for failure.

Encrypting and Decrypting Content

public bool EncryptContent(string password);

Encrypts the content of the calling XML node using 128-bit CBC AES encryption. The base64-encoded encrypted content replaces the original content.

Returns true for success, false for failure.

Encrypting and Decrypting Content

public Xml ExtractChildByIndex(int index);

Removes and returns the Nth child of an XML node. The first child is at index 0.

Returns null on failure

public Xml ExtractChildByName(string tagPath, string attrName, string attrValue);

Removes and returns the first child node at the specified tag or tag path. The attrName and attrValue may be empty, in which case the first child matching the tag is removed and returned. If attrName is specified, then the first child having a tag equal to tagPath, and an attribute with attrName is returned. If attrValue is also specified, then only a child having a tag equal to tagPath, and an attribute named attrName, with a value equal to attrValue is returned.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns null on failure

ExtractChildByName using a Tag Path

public Xml FindChild(string tagPath);

Returns the child with the given tag or at the specified tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns null on failure

Find Direct Child with Specific Tag

Access SOAP Body XML

public bool FindChild2(string tagPath);

Updates the Xml object's internal reference to point to a child at the specified tag or tagPath.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns true for success, false for failure.

Find Direct Child with Specific Tag

Benefit of XML Methods Having Names Ending in "2"

public Xml FindNextRecord(string tagPath, string contentPattern);

Returns the next record node where the child with a specific tag matches a wildcarded pattern. This method makes it easy to iterate over high-level records.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns null on failure

Demonstrate the XML FindNextRecord Method

public Xml FindOrAddNewChild(string tagPath);

First checks for a child at tagPath, and if found, returns it. Otherwise creates a new child with empty content.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns null on failure

public Xml FirstChild();

Returns the first child. A program can step through the children by calling FirstChild, and then NextSibling repeatedly.

Returns null on failure

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

public bool FirstChild2();

Updates the internal reference of the caller to point to its first child.

Returns true for success, false for failure.

More information about XML methods ending in "2"

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

Benefit of XML Methods Having Names Ending in "2"

public string GetAttributeName(int index);

Returns the name of the Nth attribute of an XML node. The first attribute is at index 0.

Returns null on failure

Methods for Getting Attributes

public string GetAttributeValue(int index);

Returns the value of the Nth attribute of an XML node. The first attribute is at index 0.

Returns null on failure

Methods for Getting Attributes

public int GetAttributeValueInt(int index);

Returns an attribute as an integer. Returns 0 if the attribute does not exist.

public string GetAttrValue(string name);

Find and return the value of an attribute having a specified name.

Returns null on failure

Methods for Getting Attributes

public int GetAttrValueInt(string name);

Returns an attribute as an integer. Returns 0 if the attribute does not exist.

Methods for Getting Attributes

public byte[] GetBinaryContent(bool unzipFlag, bool decryptFlag, string password);

Returns binary content of an XML node as a byte array. The content may have been Zip compressed, AES encrypted, or both. Unzip compression and AES decryption flags should be set appropriately.

Returns an empty byte array on failure

public Xml GetChild(int index);

Returns the Nth child of an XML node

Returns null on failure

Iterate over Direct Child Nodes by Index

public bool GetChild2(int index);

Updates the calling object's internal reference to the Nth child node.

Returns true for success, false for failure.

More information about XML methods ending in "2"

Iterate over Direct Child Nodes by Index

Benefit of XML Methods Having Names Ending in "2"

public bool GetChildBoolValue(string tagPath);

Returns false if the node's content is "0", otherwise returns true if the node contains a non-zero integer. The tagPath can be a tag or a tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "colors|primary|red".

Demonstrate the XML "I" Property

public string GetChildContent(string tagPath);

Returns the content of a child having a specified tag. The tagPath can be a tag or a tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "colors|primary|red".

Returns null on failure

Demonstrate the XML "I" Property

public string GetChildContentByIndex(int index);

Returns the content of the Nth child node.

Returns null on failure

Iterate over Direct Child Nodes by Index

SQS List Queues

public Xml GetChildExact(string tag, string content);

Returns the child having the exact tag and content.

Returns null on failure

public int GetChildIntValue(string tagPath);

Returns the child integer content for a given tag. The tagPath can be a tag or a tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "colors|primary|red".

Demonstrate the XML "I" Property

public string GetChildTag(int index);

Returns the tag name of the Nth child node.

Returns null on failure

public string GetChildTagByIndex(int index);

Returns the tag name of the Nth child node.

Returns null on failure

Iterate over Direct Child Nodes by Index

public Xml GetChildWithAttr(string tagPath, string attrName, string attrValue);

Finds and returns the XML child node having both a given tag and an attribute with a given name and value.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns null on failure

XML GetChildWithAttr

public Xml GetChildWithContent(string content);

Returns the first child found having the exact content specified.

Returns null on failure

public Xml GetChildWithTag(string tagPath);

Returns the child at the specified tag or tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Returns null on failure

public Xml GetNthChildWithTag(string tag, int n);

Returns the Nth child having a tag that matches exactly with the tagName. Use the NumChildrenHavingTag method to determine how many children have a particular tag.

Returns null on failure

Iterate over Direct Children with a Specific Tag

public bool GetNthChildWithTag2(string tag, int n);

Updates the calling object's internal reference to the Nth child node having a specific tag.

Returns true for success, false for failure.

Iterate over Direct Children with a Specific Tag

Benefit of XML Methods Having Names Ending in "2"

public Xml GetParent();

Returns the parent of this XML node, or NULL if the node is the root of the tree.

Returns null on failure

public bool GetParent2();

Updates the internal reference of the caller to its parent.

Returns true for success, false for failure.

More information about XML methods ending in "2"

Benefit of XML Methods Having Names Ending in "2"

public Xml GetRoot();

Returns the root node of the XML document

Returns null on failure

public void GetRoot2();

Updates the internal reference of the caller to the document root.

More information about XML methods ending in "2"

Benefit of XML Methods Having Names Ending in "2"

public Xml GetSelf();

Returns a new XML object instance that references the same XML node.

Returns null on failure

public string GetXml();

Generate the XML text document for the XML tree rooted at this node. If called from the root node of the XML document, then the XML declarator ("<?xml version="1.0" encoding="utf-8" ?>") is included at the beginning of the XML. Otherwise, it is not included.

Returns null on failure

public bool GetXmlSb(StringBuilder sb);

Introduced in version 9.5.0.62

Emits the XML to a StringBuilder object. (Appends to the existing contents of sb.)

Returns true for success, false for failure.

public bool HasAttribute(string name);

Returns true if the node contains an attribute with the specified name.

public bool HasAttrWithValue(string name, string value);

Returns true if the node contains attribute with the name and value.

public bool HasChildWithContent(string content);

Returns true if the node has a direct child node containing the exact content string specified.

public bool HasChildWithTag(string tagPath);

Returns true if the node has a child with the given tag (or tag path). Otherwise returns false.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

UpdateChildContent using a Tag Path

public bool HasChildWithTagAndContent(string tagPath, string content);

Returns true if the node contains child with the given tag (or tag path) and content specified.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

public void InsertChildTreeAfter(int index, Xml tree);

Adds an entire subtree as a child. If the child was a subtree within another Xml document then the subtree is effectively transferred from one XML document to another. The child tree is inserted in a position after the Nth child (of the calling node).

public void InsertChildTreeBefore(int index, Xml tree);

Adds an entire subtree as a child. If the child was a subtree within another Xml document then the subtree is effectively transferred from one XML document to another. The child tree is inserted in a position before the Nth child (of the calling node).

public Xml LastChild();

Returns the last Xml child node. A node's children can be enumerated by calling LastChild and then repeatedly calling PreviousSibling, until a NULL is returned.

Returns null on failure

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

public bool LastChild2();

Updates the internal reference of the caller to its last child.

Returns true for success, false for failure.

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

Benefit of XML Methods Having Names Ending in "2"

public bool LoadSb(StringBuilder sb, bool autoTrim);

Introduced in version 9.5.0.62

Loads XML from the contents of a StringBuilder object.

Returns true for success, false for failure.

public bool LoadXml(string xmlData);

Loads an XML document from a memory buffer and returns true if successful. The contents of the calling node are replaced with the root node of the XML document loaded.

Returns true for success, false for failure.

public bool LoadXml2(string xmlData, bool autoTrim);

Same as LoadXml, but an additional argument controls whether or not leading/trailing whitespace is auto-trimmed from each node's content.

Returns true for success, false for failure.

public bool LoadXmlFile(string fileName);

Loads an XML document from a file and returns true if successful. The contents of the calling node are replaced with the root node of the XML document loaded.

Returns true for success, false for failure.

public bool LoadXmlFile2(string fileName, bool autoTrim);

Same as LoadXmlFile, but an additional argument controls whether or not leading/trailing whitespace is auto-trimmed from each node's content.

Returns true for success, false for failure.

public Xml NewChild(string tagPath, string content);

Creates a new child having tag and content. The new child is created even if a child with a tag equal to tagPath already exists. (Use FindOrAddNewChild to prevent creating children having the same tags.)

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "colors|primary|red". See the example below for details.

Returns null on failure

Creating a New Child Node

NewChild using a Tag Path

public void NewChild2(string tagPath, string content);

Creates a new child node, but does not return the node that is created. The tagPath can be a tag or a tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "colors|primary|red". See the example below for details.

Creating a New Child Node

XML NewChild2 using a Tag Path

public Xml NewChildAfter(int index, string tag, string content);

Inserts a new child in a position after the Nth child node.

Returns null on failure

public Xml NewChildBefore(int index, string tag, string content);

Inserts a new child in a position before the Nth child node.

Returns null on failure

public void NewChildInt2(string tagPath, int value);

Inserts a new child having an integer for content. The tagPath can be a tag or a tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "colors|primary|red". See the example below for details.

Demonstrate the XML NewChildInt2 Method

public Xml NextSibling();

Returns the nodes next sibling, or NULL if there are no more.

Returns null on failure

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

public bool NextSibling2();

Updates the internal reference of the caller to its next sibling.

Returns true for success, false for failure.

More information about XML methods ending in "2"

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

Benefit of XML Methods Having Names Ending in "2"

public int NumChildrenAt(string tagPath);

Introduced in version 9.5.0.64

Returns the number of children for the node indicated by tagPath. Returns -1 if the node at tagPath does not exist.

Demonstrate the XML "I" Property

Demonstrate the XML I, J, and K Properties

Get XML Attribute Value by Path

public int NumChildrenHavingTag(string tag);

Returns the number of children having a specific tag name.

Iterate over Direct Children with a Specific Tag

public Xml PreviousSibling();

Returns the Xml object that is the node's previous sibling, or NULL if there are no more.

Returns null on failure

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

public bool PreviousSibling2();

Updates the internal reference of the caller to its previous sibling.

Returns true for success, false for failure.

More information about XML methods ending in "2"

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

Benefit of XML Methods Having Names Ending in "2"

public bool QEncodeContent(string charset, byte[] inData);

Sets the node's content with 8bit data that is in a specified multibyte character encoding such as utf-8, shift-jis, big5, etc. The data is first Q-encoded and the content is set to be the Q-encoded string. For example, if called with "gb2312"for the charset, you would get a string that looks something like this: "=?gb2312?Q?=C5=B5=BB=F9?=". Character that are not 7bit are represented as "=XX" where XX is the hexidecimal value of the byte. Use the DecodeContent method to retrieve the byte data from a Q encoded string.

Returns true for success, false for failure.

public bool RemoveAllAttributes();

Removes all attributes from an XML node. Should always return True.

Returns true for success, false for failure.

public void RemoveAllChildren();

Removes all children from the calling node.

public bool RemoveAttribute(string name);

Removes an attribute by name from and XML node.

Returns true for success, false for failure.

public void RemoveChild(string tagPath);

Removes all children with a given tag or tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

Removing / Deleting Child Nodes from XML

RemoveChild using a Tag Path

public void RemoveChildByIndex(int index);

Removes the Nth child from the calling node.

Removing / Deleting Child Nodes from XML

public void RemoveChildWithContent(string content);

Removes all children having the exact content specified.

Removing / Deleting Child Nodes from XML

public void RemoveFromTree();

Removes the calling object and its sub-tree from the XML document making it the root of its own tree.

Removing / Deleting Child Nodes from XML

public bool SaveBinaryContent(string filename, bool unzipFlag, bool decryptFlag, string password);

Saves a node's binary content to a file.

Returns true for success, false for failure.

public bool SaveXml(string fileName);

Generates XML representing the tree or subtree rooted at this node and writes it to a file.

Returns true for success, false for failure.

public Xml SearchAllForContent(Xml afterPtr, string contentPattern);

Returns the first node having content matching the contentPattern. The contentPattern is a case-sensitive string that may contain any number of '*'s, each representing 0 or more occurrences of any character. The search is breadth-first over the sub-tree rooted at the caller. A match is returned only after the search has traversed past the node indicated by afterPtr. To find the 1st occurrence, set afterPtr equal to null. (For the ActiveX implementation, the afterPtr should never be null. A reference to the caller's node should be passed instead.)

To iterate over matching nodes, the returned node can be passed in afterPtr for the next call to SearchAllForContent, until the method returns null.

Returns null on failure

XML Tree Traversal Order for Search* Methods

public bool SearchAllForContent2(Xml afterPtr, string contentPattern);

Same as SearchAllForContent except the internal reference of the caller is updated to point to the search result (instead of returning a new object).

Returns true for success, false for failure.

public Xml SearchForAttribute(Xml afterPtr, string tag, string attr, string valuePattern);

Returns the first node having a tag equal to tag, an attribute named attr, whose value matches valuePattern. The valuePattern is a case-sensitive string that may contain any number of '*'s, each representing 0 or more occurrences of any character. The search is breadth-first over the sub-tree rooted at the caller. A match is returned only after the search has traversed past the node indicated by afterPtr. To find the 1st occurrence, set afterPtr equal to null. (For the ActiveX implementation, the afterPtr should never be null. A reference to the caller's node should be passed instead.)

To iterate over matching nodes, the returned node can be passed in afterPtr for the next call to SearchForAttribute, until the method returns null.

Returns null on failure

XML SearchForAttribute Method

XML Tree Traversal Order for Search* Methods

public bool SearchForAttribute2(Xml afterPtr, string tag, string attr, string valuePattern);

Same as SearchForAttribute except the internal reference of the caller is updated to point to the search result (instead of returning a new object).

Returns true for success, false for failure.

public Xml SearchForContent(Xml afterPtr, string tag, string contentPattern);

Returns the first node having a tag equal to tag, whose content matches contentPattern. The contentPattern is a case-sensitive string that may contain any number of '*'s, each representing 0 or more occurrences of any character. The search is breadth-first over the sub-tree rooted at the caller. A match is returned only after the search has traversed past the node indicated by afterPtr. To find the 1st occurrence, set afterPtr equal to null. (For the ActiveX implementation, the afterPtr should never be null. A reference to the caller's node should be passed instead.)

To iterate over matching nodes, the returned node can be passed in afterPtr for the next call to SearchForContent, until the method returns null.

Returns null on failure

XML Tree Traversal Order for Search* Methods

public bool SearchForContent2(Xml afterPtr, string tag, string contentPattern);

Same as SearchForContent except the internal reference of the caller is updated to point to the search result (instead of returning a new object).

Returns true for success, false for failure.

XML Tree Traversal Order for Search* Methods

public Xml SearchForTag(Xml afterPtr, string tag);

Returns the first node having a tag equal to tag. The search is breadth-first over the sub-tree rooted at the caller. A match is returned only after the search has traversed past the node indicated by afterPtr. To find the 1st occurrence, set afterPtr equal to null. (For the ActiveX implementation, the afterPtr should never be null. A reference to the caller's node should be passed instead.)

To iterate over matching nodes, the returned node can be passed in afterPtr for the next call to SearchForTag, until the method returns null.

Returns null on failure

XML SearchForTag Method

XML Tree Traversal Order for Search* Methods

public bool SearchForTag2(Xml afterPtr, string tag);

Same as SearchForTag except the internal reference of the caller is updated to point to the search result (instead of returning a new object).

Returns true for success, false for failure.

public bool SetBinaryContent(byte[] inData, bool zipFlag, bool encryptFlag, string password);

Sets the node's content to a block of binary data with optional Zip compression and/or AES encryption. The binary data is automatically converted to base64 format whenever XML text is generated. If the zipFlag is True, the data is first compressed. If the encryptFlag is True, the data is AES encrypted using the Rijndael 128-bit symmetric-encryption algorithm.

Returns true for success, false for failure.

public bool SetBinaryContentFromFile(string filename, bool zipFlag, bool encryptFlag, string password);

Sets the node's content with binary (or text) data from a file. The file contents can be Zip compressed and/or encrypted, and the result is base-64 encoded.

Returns true for success, false for failure.

public void SortByAttribute(string attrName, bool ascending);

Sorts the direct child nodes by the value of a specified attribute.

public void SortByAttributeInt(string attrName, bool ascending);

Sorts the direct child nodes by the value of a specified attribute interpreted as an integer (not lexicographically as strings).

public void SortByContent(bool ascending);

Sorts the direct child nodes by content.

XML Sort by Content

public void SortByTag(bool ascending);

Sorts the direct child nodes by tag.

XML Sort by Tag

public void SortRecordsByAttribute(string sortTag, string attrName, bool ascending);

Sorts the direct child nodes by the content of an attribute in the grandchild nodes.

public void SortRecordsByContent(string sortTag, bool ascending);

Sorts the direct child nodes by the content of the grandchild nodes.

XML Sort Records by Content

public void SortRecordsByContentInt(string sortTag, bool ascending);

Sorts the direct child nodes by the content of the grandchild nodes. For sorting purposes, the content is interpreted as an integer (not lexicographically as for strings).

public bool SwapNode(Xml node);

Swaps another node's tag, content, and attributes with this one.

Returns true for success, false for failure.

public bool SwapTree(Xml tree);

Swaps another node's tag, content, attributes, and children with this one.

Returns true for success, false for failure.

public string TagContent(string tagName);

Returns the content of the 1st node found in the sub-tree rooted at the caller that has a given tag. (Note: The search for the node having tag ARG is not limited to the direct children of the caller.)

Returns null on failure

public bool TagEquals(string tag);

Returns true if the node's tag equals the specified string.

public bool UnzipContent();

Unzip the content of the XML node replacing it's content with the decompressed data.

Returns true for success, false for failure.

Compress XML Content

public bool UnzipTree();

Unzips and recreates the XML node and the entire subtree, restoring it to the state before it was zip compressed.

Returns true for success, false for failure.

Compress XML Tree

public bool UpdateAt(string tagPath, bool autoCreate, string value);

Introduced in version 9.5.0.64

Updates the content for the node indicated by tagPath. If autoCreate is true, then nodes along tagPath are auto-created as needed.

Demonstrate the XML UpdateAt Method

public bool UpdateAttrAt(string tagPath, bool autoCreate, string attrName, string attrValue);

Introduced in version 9.5.0.64

Updates or adds the attribute value for the node indicated by tagPath. If autoCreate is true, then nodes along tagPath are auto-created as needed.

Demonstrate the XML UpdateAttrAt Method

Xml.UpdateAttrAt Example #2

public bool UpdateAttribute(string attrName, string attrValue);

Adds an attribute to the node if it doesn't already exist. Otherwise it updates the existing attribute with the new value.

Returns true for success, false for failure.

Update an XML Attribute

public bool UpdateAttributeInt(string attrName, int value);

Updates an attribute value. (Call UpdateAttribute if the attribute value is a string.)

Returns true for success, false for failure.

public void UpdateChildContent(string tagPath, string value);

Replaces the content of a child node. The tagPath can be a tag or tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

UpdateChildContent using a Tag Path

Xml.ChildContent Example #2

public void UpdateChildContentInt(string tagPath, int value);

Replaces the content of a child node where the content is an integer. The tagPath can be a tag or tag path.

Beginning in version 9.5.0.64, the tagPath can be a tag path. A tag path is a series of tags separated by vertical bar characters. For example: "tagA|tagB|tagC".

public bool ZipContent();

Applies Zip compression to the content of an XML node and replaces the content with base64-encoded compressed data.

Returns true for success, false for failure.

Compress XML Content

public bool ZipTree();

Zip compresses the content and entire subtree rooted at the calling XML node and replaces the current content with base64-encoded Zip compressed data. The node and subtree can be restored by calling UnzipTree. Note that the node name and attributes are unaffected.

Returns true for success, false for failure.

Compress XML Tree