XmlWriter.WriteCharsAsync(Char[], Int32, Int32) Method

Reference

Definition

Namespace:: System.Xml

Assembly:: System.Xml.ReaderWriter.dll

Assembly:: System.Xml.dll

Assembly:: netstandard.dll

Source:: XmlWriterAsync.cs

Source:: XmlWriterAsync.cs

Source:: XmlWriterAsync.cs

Important

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Asynchronously writes text one buffer at a time.

public:
 virtual System::Threading::Tasks::Task ^ WriteCharsAsync(cli::array <char> ^ buffer, int index, int count);

public virtual System.Threading.Tasks.Task WriteCharsAsync (char[] buffer, int index, int count);

abstract member WriteCharsAsync : char[] * int * int -> System.Threading.Tasks.Task
override this.WriteCharsAsync : char[] * int * int -> System.Threading.Tasks.Task

Public Overridable Function WriteCharsAsync (buffer As Char(), index As Integer, count As Integer) As Task

Parameters

buffer: Char[]

Character array containing the text to write.

index: Int32

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

count: Int32

The number of characters to write.

Returns

Task

The task that represents the asynchronous WriteChars operation.

Exceptions

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."

-or-

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."

Remarks

This is the asynchronous version of WriteChars, with the same functionality. To use this method, you must set the Async flag to true.

This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by WriteChars(Char[], Int32, Int32).

Applies to