Copying File Error (not working)

public void run()
        {
            foreach(string i in Directory.GetDirectories("C:\\Users\\" + Environment.UserName + "\\appdata\\roaming"))
            {
                if (i == "C:\\Users\\" + Environment.UserName + "\\appdata\\roaming\\FplProject_IDE")
                {
                    if_dir_in_path = true;
                    break;
                  
                }
                else
                {
                    if_dir_in_path = false;
                    break;
                }
            }

            if (!if_dir_in_path)
            {
                Directory.CreateDirectory("C:\\Users\\" + Environment.UserName + "\\appdata\\roaming\\FplProject_IDE");
                try
                {
                    File.Copy(Directory.GetCurrentDirectory() + "\\French_Programming_Language.exe", "C:\\Users\\" + Environment.UserName + "\\appdata\\roaming\\FplProject_IDE\\French_Programming_Language.exe", true);
                }
                catch (IOException iox)
                {
                    MessageBox(new IntPtr(0), Convert.ToString(iox), "Error", 0);
                }
            }