Health Monitoring

Introduction

ASP.net web events provide a framework that you can plug into in order to monitor your applications help this is another example where ASP.net uses a feature internally and exposes the infrastructure to developers you can use when advanced report on the health of a website and audit you can even develop and race custom events to monitor the things that are important to administrators determine which events.

 They are interested in by using event subscriptions that are controlled by configuration files which can also specify channels through which the events are delivered out of the box channel providers handle saving events to SQL Server sending event reports through email writing events to the event log and forwarding events through Windows management instrumentation.

Health Monitoring   : 1

You had to accept the default rendering and it wasn't easy to redirect output to a persistent store but now ASP.net provides programmatic access to trace output through the system.Web.trace context object using the trace finished event you can hook into trace finished and do whatever you want with the output the trace finished event exposes trace messages as a collection of trace context record objects after all the request information is been gathered by registering a trace context event handler delegate you can iterate through the trace messages.

And write them to response stream a trace context record object encapsulates the trace message category any associated exception and whether the trace record was written by the trace context.warn method in a several properties he can take advantage of the category property gets the user-defined type category for the trace record so like other trace information you can categorize the information that your gathering error info gets an exception if one is associated with the trace record is warning its a value indicating whether the trace record is associated with the trace context.warn method call and finally the message property gets the user-defined.

Trace message that's associated with the object classical look at how you can take advantage of the trace context record object this example shows how to register a trace context event handler to handle the trace finished event this is the code behind the trace context.aspx page in the page load event procedure we have to add a handler for the traced finished event and so forth that we just pass in the address of the on traced finish method and then we go ahead and write some custom information the first thing that the page load event procedure does is it adds a handler to the trace finished .

Event and we pass in the address of the entrees finished method and write out a message to the trace object appears that entrees finished method like pretty much all events within the.net framework he gets a couple of parameters against the Senators object to identify what caused this event or more portly for a purpose here we get this trace context event arcs parameter and this contains a collection of trace records.