StreamWriter::WriteLineAsync Method (array<Char>, Int32, Int32)

.NET Framework 4.6 and 4.5

Writes a subarray of characters followed by a line terminator asynchronously to the stream.

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

[ComVisibleAttribute(false)]
[HostProtectionAttribute(SecurityAction::LinkDemand, ExternalThreading = true)]
public:
virtual Task^ WriteLineAsync(
	array<wchar_t>^ buffer, 
	int index, 
	int count
) override

Parameters

buffer
Type: array<System::Char>

The character array to write data from.

index
Type: System::Int32

The character position in the buffer at which to start 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 nullptr.

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.

The line terminator is defined by the TextWriter::NewLine property.

NoteNote

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The following example shows how to write characters to two separate lines in a text file by using the WriteLineAsync(array<Char>, Int32, Int32) method. The first line contains the first 11 characters from the string (the letters "First line" followed by a space). The second line contains the remaining characters from the string (the letters "and second line").

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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