Clever Geek Handbook

Can Ajax and ASP.NET tracing be used on the same page?

I'm using the Ajax refresh panel and recently added ASP.NET tracing code to aid in debugging. All of a sudden, I started getting PageRequestManagerParseErrorExceptions when any Ajax code is executed.

For example:
  Trace.Write ("Done setting employeeId.");

This appears to be due to the fact that I am not allowed to use "server trace" along with Ajax. (according to this post from Eilon Lipton ).

It's true? Am I not allowed to use the awesome ASP.NET tracing engine? It would be a shame.

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Setting pageOutput = "false" on the trace element in web.config seems to fix the problem.



Use ASP.NET tracing, but rather write to a regular diagnostic trace by setting the writeToDiagnosticsTrace attribute to "true" (this is in the trace element in the web.config file).

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