A System.Diagnostics.TextWriterTraceListener interprets this number as spaces. An System.Diagnostics.EventLogTraceListener ignores this value.

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>