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This article mainly shows you "how to use TracinginSyncServices in ADO.NET", the content is easy to understand, clear, hope to help you solve doubts, the following let the editor lead you to study and learn "how to use TracinginSyncServices in ADO.NET" this article.

What is ADO.NET TracinginSyncServices?

Tracing records various operations of the program, including synchronizing data and Metadata, and then gives this information to Listener. As a Listener, you can record this information in a file as a LOG log, or somewhere else you request. In a distributed program, Tracing is very important because you need to use it to debug the program's errors and find the source of the problem. Otherwise, it is very difficult to find the root cause of the problem.

How to start opening ADO.NET TracinginSyncServices

By default, Tracing is turned off. We can turn on Tracing by configuring TraceListener. We can open Tracing by editing app.config. Please add the following code:

How to choose the right TraceLevel

Trace records will have some performance impact, you need to seriously consider how to set up TraceLevel, in order to achieve a balance between Trace records and product performance. In general, if you just want to monitor error messages, choose TraceLevel=1 or 2. When you need more LOG information for debugging observation, you can use TraceLevel=3 or 4, please remember that the LOG generated at this time is very detailed, and the corresponding LOG file will be very large-which will have a big impact on the performance of the program. Normally, we only use this TraceLevel for debugging errors and during development.

For more information, please see the following table:

Switchvalue Tracinglevel Output 0 off Nomessagestotracelisteners. 1 error Onlyerrormessagestotracelisteners. 2 warning Errorandwarningmessagestotracelisteners. 3 info Informational,warning,anderrormessagestotracelisteners. 4 verbose Allmessagestotracelisteners.

Start an example to verify that Traceing is working properly, according to the method I introduced above, TraceLevel=3, after running the program, the LOG file is generated.

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