You may want to know the current directory of the executable from where you can start
setup of an application configuration by browsing the current directory of an application.

Code:

using System;
using System.IO;
namespace ConsoleApplication
{
class Program
{
static void Main(string[] args)
{
string path = Directory.GetCurrentDirectory();
Console.WriteLine(path);
Console.ReadKey();
}
}
}

Output:

d:\demo\ConsoleApplication\ConsoleApplication\bin\Debug

Description:

Directory class found at System.IO namespace .net base class library.
It provides various static methods which can be used for Creating, moving of the directories and subdirectories.

Exceptions: Don’t forget to handle an exceptions while working with directory manipulation.
The application may don’t have privileges to brows the directory.