you can use this code to transfer files from one folder to another.
Create one window application and you can do this.
using System.IO;
string sourcePath = @"D:\test";
string targetPath = @"D:\test_new";
if (!Directory.Exists(targetPath))
{
Directory.CreateDirectory(targetPath);
}
foreach (var srcPath in Directory.GetFiles(sourcePath))
{
File.Copy(srcPath, srcPath.Replace(sourcePath, targetPath), true);
}