How to Copy File in C#/CSharp

To copy a file in C#/CSharp, we make use of File class and its method Copy.  This class resides in System.IO namespace.  Example is given below.

using System;
using System.IO;

namespace Hello_World

    class Program
        static void Main(string[] args)
            //Source of file
            string source = @"C:\Users\ADMIN\Desktop\folder1\file.txt";
            //Destination Folder
            string destination = @"C:\Users\ADMIN\Desktop\folder2\";

            //Destination Folder + Filename
            destination += Path.GetFileName(source);

            //Copy method
            File.Copy(source, destination);