Some times you need to measure the value of something while running the application.
Using a logger is not comfortable, since you don't want to monitor gazillion rows of values.
The solution: create a performance counter and use Perfmon.exe to view it while the application is running.

Here is a code for creating a counter:

private PerformanceCounter CreatePerformanceCounter()
{        
    string categoryName = "My Category";

    if ( !PerformanceCounterCategory.Exists(categoryName) ) 
    {
        CounterCreationDataCollection CCDC = new CounterCreationDataCollection();
            
        // Add the counter.
        CounterCreationData myCounter = new CounterCreationData();
        myCounter.CounterType = PerformanceCounterType.NumberOfItems64;
        myCounter.CounterName = "My Counter";
        CCDC.Add(myCounter);

        // Create the category.
        PerformanceCounterCategory.Create("categoryName", 
"This is my cateogory", CCDC);
    }

    PerformanceCounter result = 
new PerformanceCounter(categoryName, "My Counter", false);
}