XmlWriter.WriteStartElement Method (String, String, String)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

When overridden in a derived class, writes the specified start tag and associates it with the given namespace and prefix.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)


Public MustOverride Sub WriteStartElement ( _
    prefix As String, _
    localName As String, _
    ns As String _
public abstract void WriteStartElement(
    string prefix,
    string localName,
    string ns


  • prefix
    Type: System.String
    The namespace prefix of the element.
  • ns
    Type: System.String
    The namespace URI to associate with the element.


Exception Condition

The writer is closed.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.