XmlWriter.WriteRawAsync Method (Char[], Int32, Int32)

May 11, 2014

Asynchronously writes raw markup manually from a character buffer.

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

public virtual Task WriteRawAsync(
	char[] buffer,
	int index,
	int count


Type: System.Char []
Character array containing the text to write.
Type: System.Int32
The position within the buffer indicating the start of the text to write.
Type: System.Int32
The number of characters to write.

Return Value

Type: System.Threading.Tasks.Task
The task that represents the asynchronous WriteRaw operation.


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.”


An XmlWriter asynchronous method was called without setting the Async flag to true. In this case, InvalidOperationException is thrown with the message “Set XmlWriterSettings.Async to true if you want to use Async Methods.”

This is the asynchronous version of WriteRaw(Char[], Int32, Int32), with the same functionality. To use this method, you must set the Async flag to true.

Windows Phone OS

Supported in: 8.1, 8.0

© 2014 Microsoft