XmlWriter.WriteStartElement Method (String)
When overridden in a derived class, writes out a start tag with the specified local name.
Assembly: System.Xml (in System.Xml.dll)
The writer is closed.
There is a character in the buffer that is a valid XML character but is not valid for the output encoding. For example, if the output encoding is ASCII, you should only use characters from the range of 0 to 127 for element and attribute names. The invalid character might be in the argument of this method or in an argument of previous methods that were writing to the buffer. Such characters are escaped by character entity references when possible (for example, in text nodes or attribute values). However, the character entity reference is not allowed in element and attribute names, comments, processing instructions, or CDATA sections.
An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message “An asynchronous operation is already in progress.”
The following example writes an XML node.
Option Explicit Option Strict Imports System Imports System.IO Imports System.Xml Public Class Sample Public Shared Sub Main() ' Create a writer to write XML to the console. Dim settings As XmlWriterSettings = new XmlWriterSettings() settings.Indent = true settings.OmitXmlDeclaration = true Dim writer As XmlWriter = XmlWriter.Create(Console.Out, settings) ' Write the book element. writer.WriteStartElement("book") ' Write the title element. writer.WriteStartElement("title") writer.WriteString("Pride And Prejudice") writer.WriteEndElement() ' Write the close tag for the root element. writer.WriteEndElement() ' Write the XML and close the writer. writer.Close() End Sub 'Main End Class 'Sample
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.