C # log4net Output the line number where the error occurred

Other people call me to write the interface, always error, but I this test is not a problem, just want to use log4net to follow.

After tracing, it is found that the interface does have a log of errors, but there is no specific error.

Through the way of output log, tracking is not very convenient, think of log4net can directly output the wrong line number.

According to the information on the Internet, oneself also test to verify, found to use log4net direct output wrong line number, just need to put the corresponding PDB file, together in the directory can