Re: Trace.Write in helper class not showing up in Trace.axd

Your assumptions were correct and your example was thorough. Worked first
time! I've actually added another constructor to my helper class that
accepts the page reference and created a private method in the class, too,
called MyTrace(string category,string msg,string writeOrWarn)...I think you
can see where I'm going with this. Now anywhere in the class, I can just
use MyTrace() and it writes out to the Trace.axd all nice and pretty. ; )

Thanks so very much!



""Jeffrey Tan[MSFT]"" <v-jetan@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:TS6obGXIGHA.3696@xxxxxxxxxxxxxxxxxxxxxxxx
> Hi TJ,
>
> Thanks for your post.
>
> I assume you are using VS.net2003.
>
> I was able to reproduce this problem since the Trace you used in Asp.net
> webpage is different from the Trace you used in class library.
>
> In Asp.net page, Page.Trace property is of type TraceContext, while in
> Class Library, you use System.Diagnostics.Trace class.
> System.Diagnostics.Trace has no awareness of Asp.net page trace, so it
> will
> not output trace information to the webpage or Trace.axd.
>
> If you want to show the output in the trace, you have to pass the page
> reference to the class library, then the class library method can use
> Page.Trace to output the trace information. Sample code like this:
> private void Page_Load(object sender, System.EventArgs e)
> {
> this.Trace.Write("abc");
> Class1.OutputTrace(this);
> }
>
> public class Class1
> {
> public static void OutputTrace(System.Web.UI.Page page)
> {
> page.Trace.Write("def");
> }
> }
>
> In VS2005, .Net2.0 proivded an option to redirect the
> System.Diagnostics.Trace output to Page.Trace. To do this, you can
> register
> WebPageTraceListener for the Trace listener in web.config file
> <system.diagnostics>-><trace>-> <listeners> element.
>
> Hope this helps!
>
> Best regards,
> Jeffrey Tan
> Microsoft Online Partner Support
> Get Secure! - www.microsoft.com/security
> This posting is provided "as is" with no warranties and confers no rights.
>


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