An MessageBox class used in ASP.NET

  /// < summary >
  /// custom information dialog box
  /// < /summary >
  public class MessageBox
  {
  /// < summary >
  /// defines an web page to display user-defined error messages
  /// < /summary >
  System.Web.UI.Page p;
  /// < summary >
When   /// instance, the parameter is this, such as MessageBox MB=new MessageBox(this);
  /// < /summary >
  /// < param name="Page" > This parameter is: this< /param >
  public   MessageBox(System.Web.UI.Page Page)
  {
    p = Page; // create page
  }
  /// < summary >
  /// displays the dialog box
  /// < /summary >
  /// < param name="message" > Prompt message < /param >
  public void Show(string message)
  {
    string   script=" < script > alert('"+ message +"') < /script > ";
    p.Response.Write(script);
  }
  }