Skip to main content

70-562 Health Monitoring


Programmatic access to trace output from System.Web.TraceContext, using the TraceFinished event.

TraceContextRecord encapsulates a trace message, it can be put in CAtegory, ErrorInfo gets an exception, IsWarning indicates if it's a warning.

One has to attach en avent heandler to the Trace.TraceFinihsed += new TraceContextEventHandler(ONTraceFinished);

This handler recieves within it's event args a collection TraceContextRecord.

It can be used to log events on a sql server database.

First requires to run Aspnet_regsql.exe utility to create the db that will be used by listeners, Confiure SQL server for application Services, pick an instance to host on, you get a summary, and it will take care of confuring the database, now it's set to save health info on this db.

In the web.config, a healthMonitoring element needs to be added within the system.web eleement, by specifiying the provider, it's type, connection string, and then rules for which events to log, and EventMappings from the root Web.config file.




Comments

Post a Comment

Popular posts from this blog

React JS Patterns

React JS is always evolving, and evolving quickly. These evolutions can be very significant ones, for example, the addition of hooks. React has a lot of code patterns, often these patterns are motivated by the DRY and/or the open-close principle. These patterns sometimes come in to replace a previous one, yet the previous ones still stays in use, as a consequence, the list of patterns keep growing. The goal of the next few posts will be to list the patterns commonly used in React JS developpement. Some patterns are more specific to JSX and I will start with these, and maybe add patterns specific to Redux.
4 comments
Read more

Rxjs Forkjoin vs Zip

These Rxjs combination operators are handy to make Rest calls in parallel and combine their results. Both take n observables and will return the results, with the difference that forkJoin will complete even if one of the nested observables errors of completes.
Post a Comment
Read more

70-562 Custom Visualizers

Framework objects are clearly viewable in the locals window during debugging. User made class librairies and their object need to provide visualizers for maintenance and debugging. You can create your own visualizers, MS exposes the functionnality through the .Net Framework; and this is relatively easy. Mulitple visualizers can be created per type. You can have tree views, grids; customizing it to the way that is the most usefull for debugging this particular object. The [Serializable()] attribute has to be included to your class to allow the visual studio visualizer to parse the object. A visualizer is a dll, a regular assembly, it requires a windows form to display the data. The visualizer class will be implemented by the form. The visualizer class has to inherit the DialogDebuggerVisualizer class with the DebuggerVisualizer attribute, and also the Microsoft.VisaulStudio.DebuggerVisualizers namespace. The visualizer can be made to only read, or modify existing data. T...
Post a Comment
Read more