Assembly: System.Xml (in System.Xml.dll)
You must set this value to true when you create a new XmlWriter instance if you want to use asynchronous XmlWriter methods on that instance. After the XmlWriter instance is created, the property is read-only. The default value of this property is false.
This flag is ignored by the XmlWriter::Create overload. This means that if you create a new XmlWriter based on an existing XmlWriter, the async behavior depends on the input XmlWriter, and you cannot use the flag to change the async behavior.
Windows Phone 8.1, Windows Phone 8, 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.