The default is false.

Flushing the stream will not flush its underlying encoder unless you explicitly call Debug.Flush or Debug.Close. Setting Debug.AutoFlush to true means that data will be flushed from the buffer to the stream, but the encoder state will not be flushed. This allows the encoder to keep its state (partial characters) so that it can encode the next block of characters correctly. This scenario affects UTF8 and UTF7 where certain characters can only be encoded after the encoder receives the adjacent character or characters.

To set the Debug.AutoFlush and Debug.IndentSize for System.Diagnostics.Debug, you can also edit the configuration file corresponding to the name of your application. The configuration file should be formatted as shown in the following example.

<configuration>
  <system.diagnostics>
    <trace autoflush="true" indentsize="7" />
  </system.diagnostics>
</configuration>