How can I get the current Trace Switch programatically?

c#, system.diagnostics, web-config

Solution

Once you've defined the switch value in your `web.config` file, it's easy to get this value from your application by creating a `TraceSwitch` with the same name:

private static TraceSwitch logSwitch = new TraceSwitch("logLevelSwitch",
    "This is your logLevelSwitch in the config file");

public static void Main(string[] args)
{
    // you can get its properties value then:
    Console.WriteLine("Trace switch {0} is configured as {1}",
        logSwitch.DisplayName,
        logSwitch.Level.ToString());

    // and you can use it like this:
    if (logSwitch.TraceError)
        Trace.WriteLine("This is an error");

    // or like this also:
    Trace.WriteLineIf(logSwitch.TraceWarning, "This is a warning");
}

Moreover, for this to work, according to the documentation:

You must enable tracing or debugging to use a switch. The following syntax is compiler specific. If you use compilers other than C# or Visual Basic, refer to the documentation for your compiler.

To enabledebugging in C#, add the `/d:DEBUG` flag to the compiler command line when you compile your code, or you can add `#define DEBUG` to the top of your file. In Visual Basic, add the `/d:DEBUG=True` flag to the compiler command line.

To enable tracing using in C#, add the `/d:TRACE` flag to the compiler command line when you compile your code, or add `#define TRACE` to the top of your file. In Visual Basic, add the `/d:TRACE=True` flag to the compiler command line.

Problem

In my `web.config` I have: ``` <system.diagnostics> <switches> <add name="logLevelSwitch" value="1" /> </switches> </system.diagnostics> ``` Is there a way that I could call, for example: `System.Diagnostics.TraceSwitch["logLevelSwitch"]`to get the current value?

Original source