TextWriter::WriteAsync Method (array<Char>^, Int32, Int32)
Writes a subarray of characters to the text string or stream asynchronously.
Assembly: mscorlib (in mscorlib.dll)
public: [ComVisibleAttribute(false)] [HostProtectionAttribute(SecurityAction::LinkDemand, ExternalThreading = true)] virtual Task^ WriteAsync( array<wchar_t>^ buffer, int index, int count )
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 retrieving data.
- count
-
Type:
System::Int32
The number of characters to write.
Return Value
Type: System.Threading.Tasks::Task^A task that represents the asynchronous write operation.
| Exception | Condition |
|---|---|
| ArgumentNullException | buffer is null. |
| ArgumentException | The index plus count is greater than the buffer length. |
| ArgumentOutOfRangeException | index or count is negative. |
| ObjectDisposedException | The text writer is disposed. |
| InvalidOperationException | The text writer is currently in use by a previous write operation. |
The TextWriter class is an abstract class. Therefore, you do not instantiate it in your code. For an example of using the WriteAsync method, see the StreamWriter::WriteAsync method.
Available since 8
.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