How to Want to find a doubleQuotestring and remove the doublequote and a comma in string.

private static void Main(string[] args)
{
    var value = "test1,test2,\"test3\",test4";

    var arr = value.Split(',');
    var result = "";
    for (int i = 0; i < arr.Length; i++)
    {
        var s = arr[i];
        if(s.StartsWith("\"") && s.EndsWith("\""))
        {
                result +=  s.Substring(1, s.Length - 2);
        }
        else
        {
            result += s;
        }
        if (i < arr.Length-1)
            result += ",";
    }

    Console.WriteLine(result);
    Console.Read();
}