using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        //var space = " ".ToCharArray();

        string str = "Function001(param1, param2,param3,param4, param5)";

        var clean = new string (str.Where(ch => !" ".Contains(ch)).ToArray());

        Console.WriteLine(clean);

    }

}