The IndentChars property gets or sets the character string to use when indenting. This setting is used when the Indent property is set to true. The NamespaceHanding property gets or sets a value that indicates whether the XmlWriter should remove duplicate namespace declarations when writing XML content.
The default behavior is for the writer to output all namespace declarations that are present in the writer's namespace resolver.
The NewLineChars property gets or sets the character string to use for line breaks. The NewLineHandling property gets or sets a value indicating whether to normalize line breaks in the output. The NewLineOnAttributes property gets or sets a value indicating whether to write attributes on a new line.
The OutputMethod property gets the method used to serialize the XmlWriter output. The WriteEndDocumentOnClose property gets or sets a value that indicates whether the XmlWriter will add closing tags to all unclosed element tags when the Close method is called.
Alright, now you are familiar with the XmlWriterSettings properties, let's create an XML document to apply these settings. Create method. The code snippet in Listing 3 creates an XmlWriter with some features by setting the XmlWriter settings.
WriteElementString "title" , book. Title ; writer. WriteElementString "author" , book. Name ; writer. WriteElementString "publisher" , book. Publisher ; writer. WriteElementString "price" , book. ToString ; writer. Fragment; writerSettings. NET" ; writer. WriteElementString "publisher" , "APress" ; writer. Create Console. Out ; Flush and Close Methods The Flush method flushes whatever is in the buffer to the underlying streams and also flushes the underlying stream. The Close method closes this stream and the underlying.
You must directly or indirectly close an XmlWriter. One of the best practices is to use the "using" statement as used in Listing 4 that forces an automatic Close method call on an XmlWriter. Flush ; writer. Close ; Writing to Console We can use the Console. Out parameter as a part of the XmlWriter. Create method to spit out XML to the console. Out ; The following code snippet creates an XML and spits it out to the console. WriteStartDocument ; writer. The Settings property represents a set of features supported by the XmlWriter.
The WriteState property gets the current state of the XmlWriter class. The return value WriteState. This class provides many write method to write XML document items. This class is base class for XmlTextWriter class, which we'll be using in our sample example. The XmlNode class plays an important role. Although, this class represents a single node of XML but that could be the root node of an XML document and could represent the entire file.
This class is an abstract base class for many useful classes for inserting, removing, and replacing nodes, navigating through the document. It also contains properties to get a parent or child, name, last child, node type and more. XmlDocument class represents an XML document and provides methods and properties to load and save a document.
It also provides functionality to add XML items such as attributes, comments, spaces, elements, and new nodes. XmlDocumentFragment class represents a document fragment, which can be used to add to a document. NET data set objects. In spite of above discussed classes, System. Xml namespace contains more classes. Next namespace in Xml series is System. Serialization namespace contains classes that are used to serialize objects into XML format documents or streams.
This class contains many Move methods to move through a document. This file comes with VS. NET samples. You can search this on your machine and change the path of the file in the following line:. Besides XmlReader methods and properties, these classes also contain members to read text, node, and schemas respectively. You read a file by passing file name as a parameter in constructor.
After read method is called, you can read all information and data stored in a document. The NodeType property of XmlTextReader is important when you want to know the content type of a document. List 2 code sample reads an XML document, finds a node type and writes information at the end with how many node types a document has. Highly Recommended. I have published a free book on XML programming using C.
Get your free copy here. Still hungry for more XML programming with C and. Here is a dedicated section with hundreds of articles and code samples on XML programming using C and. After reading a node, I check its NodeType property to find the node and write node contents to the console and keep track of number of particular type of nodes. In the end, I display total number of different types of nodes in the document. XmlWriter class contains the functionality to write to XML documents. It contains methods and properties to write to XML documents.
This class has several Writexxx method to write every type of item of an XML document. Some of these methods are used in a start and end pair.
Besides many methods, this class has three properties. The WriteState gets and sets the state of the XmlWriter class. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. The file exists and is read-only IOException. The path is too long PathTooLongException. The disk is full IOException. This example creates a new file, if the file does not already exist.
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