// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002620/stringbuilder-getindexafternextdoublequote

​

// @nuget: Z.ExtensionMethods

​

using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        var test = new StringBuilder("Fizz\"Buzz\"Fizz",0);

​

        // C# Extension Method: StringBuilder - GetIndexAfterNextDoubleQuote

        var index = test.GetIndexAfterNextDoubleQuote();

        Console.WriteLine(index);

    }

}