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XmlWriter.WriteAttributeStringAsync Method

.NET Framework 4.6 and 4.5

Asynchronously writes out the attribute with the specified prefix, local name, namespace URI, and value.

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

public Task WriteAttributeStringAsync(
	string prefix,
	string localName,
	string ns,
	string value
)

Parameters

prefix
Type: System.String

The namespace prefix of the attribute.

localName
Type: System.String

The local name of the attribute.

ns
Type: System.String

The namespace URI of the attribute.

value
Type: System.String

The value of the attribute.

Return Value

Type: System.Threading.Tasks.Task
The task that represents the asynchronous WriteAttributeString 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 WriteAttributeString, with the same functionality. To use this method, you must set the Async flag to true.

.NET Framework

Supported in: 4.6, 4.5

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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