Download details: Log Parser 2.2. Log parser is a powerful, versatile tool that provides universal query access to text-based data such as log files, XML files and CSV files, as well as key data sources on the Windows® operating system such as the Event Log, the Registry, the file system, and Active Directory®. Log parser is a powerful, versatile tool that provides universal query access to text-based data such as log files, XML files and CSV files, as well as key data sources on the Windows® operating system such as the Event Log, the Registry, the file system, and Active Directory®.
You tell Log Parser what information you need and how you want it processed. The results of your query can be custom-formatted in text based output, or they can be persisted to more specialty targets like SQL, SYSLOG, or a chart. Most software is designed to accomplish a limited number of specific tasks. Log Parser is different... the number of ways it can be used is limited only by the needs and imagination of the user. Using log4net.
Using log4net by Nauman Leghari 06/16/2003 Introduction Logging is an essential tool in every developer's arsenal. It helps the developer to identify problems faster by showing the state of an application at any given point. It is important after deployment, when all that the poor system admins have are the logs that are generated by your application. About log4net log4net, as I said earlier, is an open source project and is the port of the famous log4j project for Java. You can see from the feature document that this framework is released for four different platforms. The Structure of log4net log4net is built using the layered approach, with four main components inside of the framework. Logger The Logger is the main component with which your application interacts.
Generating a log message is different than actually showing the final output. The logger provides you with different methods to log any message. The skeleton of the ILog interface is shown below: Logging Levels Table 1. Error logging and patterns. Back in Overload 32 Francis suggested that his lack of experience with larger systems made him ill-equipped to review design patterns. The implication, of cause, is that design patterns are for large systems. He then went on to throw down the gauntlet of a challenge to anyone, to explain some patterns. I didn't set out to pick up the gauntlet - in my head this article was sketched - but hopefully I can show Francis where patterns are applicable on a small scale. This article sets out to look at error logging and present a solution that is scalable from small to large systems.
In the process of tackling this problem several well-known patterns are used. Error handling is universal to small and large systems, and whatever mechanism you use to handle errors there is always a need to log errors. In my experience, error handling and logging is one of the key reasons why small solutions often don't scale upwards.
All the patterns referenced here are from Design Patterns by Gamma et al. Proxy. Tail for Win32 - Home Page. Tracing with Log4Net and the Context Singleton Design Pattern. Download source files - 261 Kb Abstract: This article describes techniques than enable ASP.Net trace style performance information to be outputted to any appender using log4net. In building this utility class, we also delve into a design pattern that enables developer’s to create a single instance of a class for a single ASP.Net request, the Context Singleton pattern. Log4Net is a flexible, powerful open source logging library that many .Net developers swear by. On my last project, I had the opportunity to work with it and its many flexible “appenders.”
For more information on using log4net, I recommend visiting some of the resources listed at the end of this article. But despite its power, I found myself missing the simple to understand output that you get with the normal ASP.Net Trace. Figure 1 - Example ASP.Net Trace Output The ASP.Net Trace output makes it very easy to see how long each step takes and identify potential performance bottlenecks. Problems with the GOF Singleton in ASP.Net. Logger Pattern, How to Log Messages from the Inside of a Class. Download source files - 1.43 KB Introduction This is my first CodeProject article, so, do not expect too much of it! Also, English is not my first language, so, excuse me if I have made any mistakes. Why do we need to log everything? The Idea I needed to simply log a string message from the inside of my class, without having to depend on an external class. Class SomeClass { ... void DoSomething() { ... Where LogMessage(String) simply puts that string out of my class, and makes some other function handle it... hey, that sounds familiar to me...
The Solution If you haven't used Delegates so far, you don't really know what a delegate is. Public delegate void LogDelegate(String msg); And now, I will add some code to my class to handle it: private LogDelegate _log; public LogDelegate Logger { get { return _log; } set { _log = value; } } private void LogMessage(String msg) { if( _log ! Cool! StuffMaker.Log += delegate ( String msg ) { Console.WriteLine(msg); }; This will work only in C# 2.0. History. Error logging and patterns. LogViewer for Log4Net. C# - How to group logging messages in log4net by namespace. Log4net Manual: Configuration. Configuration Inserting log requests into the application code requires a fair amount of planning and effort. Observation shows that approximately 4 percent of code is dedicated to logging.
Consequently, even moderately sized applications will have thousands of logging statements embedded within their code. Given their number, it becomes imperative to manage these log statements without the need to modify them manually. The log4net environment is fully configurable programmatically. However, it is far more flexible to configure log4net using configuration files. Currently, configuration files are written in XML. Let us give a taste of how this is done with the help of an imaginary application MyApp that uses log4net. MyApp begins by importing log4net related classes. MyApp uses the following Bar class: The invocation of the BasicConfigurator.Configure() method creates a rather simple log4net setup. Note that by default, the root logger is assigned to Level.DEBUG. The output of MyApp is: Making log4net run on .NET 4.0. I was playing around with .NET 4.0 and wanted to include logging.
So I (v1.2.10) and added the source project to my solution. The next thing to do was to configure log4net and I would be able to log to one or several 'appenders'. At least, that was what I thought! How to configure and use log4net is not the scope of this article, but you can find all what you need on the .
A summary of the solution can be found at the bottom of this article. When building I got some errors & warnings. Could not resolve assembly "System.Web". I went googling about the different target frameworks and I found a page explaining the this: OK, fair enough, I changed the target framework to ".NET Framework 4" instead of ".NET Framework 4 Client Profile" on the log4net project. Finally, I can build my solution! Exception has been thrown by the target of an invocation.
The inner exception was more detailed: Having changed that I ran it again.