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You have the following code (line numbers are included for reference only):
You need to ensure that if an exception occurs, the exception will be logged.
Which code should you insert at line 28?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: B
Explanation/Reference:
* XmlWriterTraceListener
Directs tracing or debugging output as XML-encoded data to a TextWriter or to a Stream, such as a FileStream.
* TraceListener.TraceEvent Method (TraceEventCache, String, TraceEventType, Int32) Writes trace and event information to the listener specific output.
Syntax:
[ComVisibleAttribute(false)]
public virtual void TraceEvent(
TraceEventCache eventCache,
string source,
TraceEventType eventType,
int id
)
A is wrong – no event listeners
C is wrong – “MyAppErrors” event log source might not exist
D is wrong – there might be not enough permissions to write into thie log
B is correct