XmlTextWriter creates an XML file

Introduction
With the popularization of XML and a large number of applications in dynamic WEB applications, it is also important to modify and delete XML files by using. NET. A simple concept is that an XML file is no different from a large text file, and it is prior. NET, many ASP developers usually use Response when they need the program to output XML files. the Write () method is output as an XML document.
Use Response. writing () is not a good way to output XML documents. First, when we use this method to output characters to form an XML file, we are worried about whether the output characters comply with the XML specification. XML documents that do not comply with the XML specification cannot be displayed completely, such as: <,> ,&"", and ', when they appear in an XML file, we must manually find these nonstandard characters. Again, when we need to output a file containing many namespaces, response. the code required for the Write () method will become lengthy and less readable.
Fortunately ,. NET FrameWork provides a class especially for creating XML files-System. xml. xmlTextWriter uses this class to create XML files. You do not need to worry about whether the output meets the XML specifications, and the code will become very concise. This article describes how to use the XmlTextWriter class to create an XML file.
XML description
This article assumes that the reader has a certain XML Base. If you are new to XML, I suggest you continue reading this article, first, let's take a look at the materials such as "What is XML" and "start with XML.
Introduction to XmlTextWriter objects:
The XmlTextWriter object contains many methods that can be used to add elements and attributes to an XML file when creating an XML file. The following are important:
WriteStartDocument ()-This method is used to create an XML file first. It is the first line of code used to create an XML file. It is used to specify the file as an XML file and set its encoding type;
WriteStartElement (string)-This method is used to create new elements in the XML file. You can set the element name through the String parameter (of course, you can also use the optional keyword to specify an optional parameter );