// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002619/stringbuilder-appendlinejoin

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Text;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var list = new List<string> {"Fizz", "Buzz"};

        var test = new StringBuilder();

​

        // C# Extension Method: StringBuilder - AppendLineJoin

        test.AppendLineJoin(",", list);

​

        Console.WriteLine(test.ToString());

    }

}