Getting Started - The Basics
The simplest possible example using the ubiquitous "Hello World":
Hello.cs
#define TRACE
using System.Diagnostics;
class Program {
static TraceSource _trace = new TraceSource("Hello");
public static void Main() {
_trace.TraceInformation("Hello World!");
}
}
Hello.exe.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.diagnostics>
<sources>
<source name="Hello" switchValue="All">
<listeners>
<clear />
<add name="console"
type="System.Diagnostics.ConsoleTraceListener" />
</listeners>
</source>
</sources>
</system.diagnostics>
</configuration>
Compile with "csc Hello.cs" (in .NET 4.0 you may need "csc Hello.cs /r:System.dll"), and run, you should get the following output:
PS C:\Essential.Diagnostics\Examples> csc.exe Hello.cs
PS C:\Essential.Diagnostics\Examples> .\Hello.exe
Hello Information: 0 : Hello World!
Note that instead of "#define TRACE" you would usually compile as "csc Hello.cs /d:TRACE", which is turned on by default in Visual Studio.
A simple "Hello World" isn’t however very useful for showing the different capabilities of logging, so the next page will walk you through a
logging primer to introduce the range of features available in
System.Diagnostics and the Essential.Diagnostics extensions.