Copy files from one directory to another

Step 1. Add following namespace

using System.IO;

Step 2. Use this code

public void readfiles()

{
    string[] filePaths = Directory.GetFiles("Your Path");

    foreach (var filename in filePaths)

    {

        string file = filename.ToString();

                

        //Do your job with "file"

        string str = "Your Destination"+file.ToString(),Replace("Your Path");

        if (!File.Exists(str))

        {

            File.Copy(file , str);

        }

    }

}