// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002041/directoryinfo-pathcombinefile

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.IO;

​

public class Program

{

    public static string DirectoryName = @"Main Directory";

    public static void Main()

    {   

        string[] paths = {"Entity Framework", "Code First", "Example.txt"};

        //C# Extension Method - DirectoryInfo - PathCombineFile

        var fileInfo = DirectoryName.ToDirectoryInfo().PathCombineFile(paths);

​

        Console.WriteLine(fileInfo.FullName);

    }

}