WriteAsync Method (Char[], Int32, Int32)
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StreamWriter.WriteAsync Method (Char[], Int32, Int32)

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

Writes a subarray of characters to the stream asynchronously.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public override Task WriteAsync(
	char[] buffer,
	int index,
	int count
)

Parameters

buffer
Type: System.Char []
A character array that contains the data to write.
index
Type: System.Int32
The character position in the buffer at which to begin reading data.
count
Type: System.Int32
The maximum number of characters to write.

Return Value

Type: System.Threading.Tasks.Task
A task that represents the asynchronous write operation.

ExceptionCondition
ArgumentNullException

buffer is null.

ArgumentException

The index plus count is greater than the buffer length.

ArgumentOutOfRangeException

index or count is negative.

ObjectDisposedException

The stream writer is disposed.

InvalidOperationException

The stream writer is currently in use by a previous write operation.

Windows Phone OS

Supported in: 8.1, 8.0

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