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WriteProcessingInstructionAsync Method
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XmlWriter.WriteProcessingInstructionAsync Method

.NET Framework 4.6 and 4.5

Asynchronously writes out a processing instruction with a space between the name and text as follows: <?name text?>.

Namespace:  System.Xml
Assemblies:   System.Xml (in System.Xml.dll)
  System.Xml.ReaderWriter (in System.Xml.ReaderWriter.dll)

public virtual Task WriteProcessingInstructionAsync(
	string name,
	string text
)

Parameters

name
Type: System.String

The name of the processing instruction.

text
Type: System.String

The text to include in the processing instruction.

Return Value

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

ExceptionCondition
InvalidOperationException

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.”

InvalidOperationException

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 WriteProcessingInstruction, with the same functionality. To use this method, you must set the Async flag to true.

.NET Framework

Supported in: 4.6, 4.5

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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