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XmlWriter.WriteBase64Async Method (Byte[], Int32, Int32)

.NET Framework (current version)
 

Asynchronously encodes the specified binary bytes as Base64 and writes out the resulting text.

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

public virtual Task WriteBase64Async(
	byte[] buffer,
	int index,
	int count
)

Parameters

buffer
Type: System.Byte[]

Byte array to encode.

index
Type: System.Int32

The position in the buffer indicating the start of the bytes to write.

count
Type: System.Int32

The number of bytes to write.

Return Value

Type: System.Threading.Tasks.Task

The task that represents the asynchronous WriteBase64 operation.

Exception Condition
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 WriteBase64, with the same functionality. To use this method, you must set the Async flag to true.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
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