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XmlWriter.WriteStartAttributeAsync Method

May 11, 2014

Asynchronously writes the start of an attribute with the specified prefix, local name, and namespace URI.

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

protected internal virtual Task WriteStartAttributeAsync(
	string prefix,
	string localName,
	string ns
)

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 for the attribute.

Return Value

Type: System.Threading.Tasks.Task
The task that represents the asynchronous WriteStartAttribute 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 WriteStartAttribute(String, String, String), 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

Afficher:
© 2014 Microsoft