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XmlWriter.WriteSurrogateCharEntityAsync Method

.NET Framework 4.5

Asynchronously generates and writes the surrogate character entity for the surrogate character pair.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)
public virtual Task WriteSurrogateCharEntityAsync(
	char lowChar,
	char highChar
)

Parameters

lowChar
Type: System.Char

The low surrogate. This must be a value between 0xDC00 and 0xDFFF.

highChar
Type: System.Char

The high surrogate. This must be a value between 0xD800 and 0xDBFF.

Return Value

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

.NET Framework

Supported in: 4.5.1, 4.5

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

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

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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