FileLogTraceListener TimeStamp , TraceOptions ?

[semedao]

Hi,
how and can I cause the FileLogTraceListener to write the timestamp ,
Callstack etc to the log ?
I mean that it will do it in every Write() , or TraceInformation call

when I tried to add :
traceOutputOptions="ProcessId, DateTime"
I saw that only calling to Trace.TraceError("blabla") will make it !

this is my app.config file:
<system.diagnostics>
<switches>
<add name="TraceSwitchLevel" value = "4" />
</switches>
<trace autoflush="true" indentsize="4">
<listeners>
<add name="FileLog"
type="Microsoft.VisualBasic.Logging.FileLogTraceListener,
Microsoft.VisualBasic, Version=8.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL"
BaseFileName="xxx" ReserveDiskSpace="1048576000"
DiskSpaceExhaustedBehavior="DiskSpaceExhaustedOption.DiscardMessages"
IncludeHostName="True" Append="False" initializeData="FileLogWriter"
traceOutputOptions="ProcessId, DateTime"/>
</listeners>
</trace>
</system.diagnostics>

 

[semedao]

I saw that the Trace.TraceInformation made it , but the problem isthat I
usually used the
Trace.WriteLineIf(TraceSwitchLevel.TraceVerbose, "blabla", "bla");

and with Trace.TraceInformation it write the data even when
TraceSwitchLevel.TraceVerbose = false

and I want to control the trace from the app.config and not ompilenew
versions every time I want to trace

thanks

 

[Walter Wang [MSFT]]

Hi,

The TraceOptions are only used when using Trace* functions(), when using
Write*() functions, no additional information will be outputed.

As for the WriteLineIf, it's unfortunate that there're no equivalent
Trace*If() functions, however, it's every easy to create a wrap function as:

public static void TraceInformationIf(bool condition, string message)
{
if (condition) Trace.TraceInformation(message);
}

Please let me know if this works for you.

Sincerely,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

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[semedao]

thanks It's work !

 

[Dave Sexton]

Hi Walter,

The compiler won't optimize out calls to TraceInformationIf when the TRACE symbol isn't defined; however, you can add the following
attribute to accommodate:

[Conditional("TRACE")]
public static void TraceInformationIf(bool condition, string message)
{
...
}

 

[Walter Wang [MSFT]]

Thanks Dave for your reminder.

Hi semedao,

When ConditionalAttribute is applied to a method, it indicates to compilers
that a call to this method should not be compiled into MSIL unless the
conditional compilation symbol associated with ConditionalAttribute is
defined. For more information about this attribute:

http://windowssdk.msdn.microsoft.com/en-us/library/system.diagnostics.condit
ionalattribute(VS.80).aspx

By the way, if you use reflector to view the source of Trace.WriteLineIf,
they are also using this attribute:

[Conditional("TRACE")]
public static void WriteIf(bool condition, object value)
{
TraceInternal.WriteIf(condition, value);
}

Again, thanks Dave for your kind remind.

Regards,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

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