StreamWriter.WriteAsync Method (Char)
Writes a character to the stream asynchronously.
Assemblies: mscorlib (in mscorlib.dll)
System.IO (in System.IO.dll)
[ComVisibleAttribute(false)] [HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)] public override Task WriteAsync( char value )
- Type: System.Char
The character to write to the stream.
Return ValueType: System.Threading.Tasks.Task
A task that represents the asynchronous write operation.
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 a single character (the letter "a") to a text file by using the method.