WriteQualifiedNameAsync Method
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XmlWriter.WriteQualifiedNameAsync Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Asynchronously writes out the namespace-qualified name. This method looks up the prefix that is in scope for the given namespace.

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

public virtual Task WriteQualifiedNameAsync(
	string localName,
	string ns
)

Parameters

localName
Type: System.String
The local name to write.
ns
Type: System.String
The namespace URI for the name.

Return Value

Type: System.Threading.Tasks.Task
The task that represents the asynchronous WriteQualifiedName 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 WriteQualifiedName(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

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