using System;
using System.Runtime.CompilerServices;
namespace CSharpFeatures
{
    class CallerInfoExample
    { 
        static void Main(string[] args)
        {
            // Calling method
            show();
        }
        // We must specify optional parameters to get caller info.
        static void show([CallerMemberName] string callerName = null,
            [CallerFilePath] string callerFilePath = null, 
            [CallerLineNumber] int callerLine = -1)
        {
            Console.WriteLine("Caller method Name: {0}", callerName);
            Console.WriteLine("Caller method File location: {0}", callerFilePath);
            Console.WriteLine("Caller method Line number: {0}", callerLine);
        }
    }
}

Caller method Name: Main
Caller method File location: f:\C#\C# Features\CSharpFeatures\CallerInfoExample.cs
Caller method Line number: 10