Issue in Folder controls

Hi,
  Below is the codes for copy,delete, move, rename the folder/files located in the server through a client side events i got this code on google, but wheni try to implement this class file on my proj it shows error, can any one explain how to implement this code without any error.



/// <summary>
/// minimalist single-page class for performing server file management via the browser
/// </summary>
public class _default : System.Web.UI.Page
{
  
    #region " Web Form Designer Generated Code "
  
    //This call is required by the Web Form Designer.
    [System.Diagnostics.DebuggerStepThrough()]
    private void InitializeComponent()
    {
      
    }
  
    //NOTE: The fol ...