Quick-and-dirty C# profiler. Really, it's just a wrapper for Stopwatch. Replace Console.WriteLine with whatever output makes sense.

QuickProfiler.cs

public class QuickProfiler : IDisposable
{
    private readonly Stopwatch _sw = Stopwatch.StartNew();
    private readonly string _name;

    public QuickProfiler(string name)
    {
        _name = name;
    }

    public void Dispose()
    {
        _sw.Stop();

        Console.WriteLine($"QuickProfiler: {_name} took {_sw.ElapsedMilliseconds}ms");
    }
}

Usage:

using (new QuickProfiler("Some Expensive Operation"))
{
    var result = SomeExpensiveOperation();
}

Sample output:

QuickProfiler: Some Expensive Operation took 330ms