StreamWriter.Null Field


Provides a StreamWriter with no backing store that can be written to, but not read from.

public: static initonly System::IO::StreamWriter ^ Null;
public static readonly System.IO.StreamWriter Null;
 staticval mutable Null : System.IO.StreamWriter
Public Shared ReadOnly Null As StreamWriter 

Field Value



The following example demonstrates a use of the Null field.

if ( sw->Equals( StreamWriter::Null ) )
   sw->WriteLine( "The store can be written to, but not read from." );
    sw.WriteLine("The store can be written to, but not read from.");
If Sw.Equals(StreamWriter.Null) Then
    Sw.WriteLine("The store can be written to, but not read from.")
End If


Use Null to redirect output to a StreamWriter that will not consume any operating system resources.

When the StreamWriter.Write methods are invoked on Null, the call simply returns, and no data is actually written to any backing store.

For a list of common I/O tasks, see Common I/O Tasks.

Applies to

See also