Copy();

Copy(); function in C#
It's used to make another event of String with a similar incentive as a predetermined String. It is a static system for String class. Its entry type is a string. 
Example
using System;

namespace program
{
    class Program
    {
        static void Main(string[] args)
        {
            string str1 = "Wellcome";
            string str2 = string.Copy(str1);
            Console.WriteLine(str1+"\n"+str2);       
            Console.ReadKey();
        }
          
    }
 }

Output
Wellcome
Wellcome