// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002079/string-formatwith

​

// @nuget: Z.ExtensionMethods

using System;

public class Program

{

    public static string FileName = "test.xml";

​

    public static void Main()

    {

        var text = @"Time now: {0}";

​

        //C# Extension Method: String - FormatWith

        var timeNow = text.FormatWith(DateTime.Now);

​

        Console.WriteLine(timeNow);

    }

}

​