// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002077/string-concatwith

​

// @nuget: Z.ExtensionMethods

​

using System;

​

public class Program

{

    public static void Main()

    {

        string [] values = {"in a text, ", "use the br element."};

        string str = "To break lines ";

​

        // C# Extension Method: String - ConcatWith

        string content = str.ConcatWith(values);

        Console.WriteLine(content);

    }

}