C# 0 The Complete Reference

Using the LastModified Property

Sometimes you will want to know when a resource was last updated. This is easy to find 

out when using 

HttpWebResponse

 because it defines the 

LastModified

 property. It is 

shown here:

public DateTime LastModifi ed { get; }

LastModified

 obtains the time that the content of the resource was last modified.

The following program displays the time and date at which the URI entered on the 

command line was last updated:

/* Use LastModified.

   To see the date on which a website was

   last modified, enter its URI on the command

   line. For example, if you call this program

   LastModifiedDemo, then to see the date of last

   modification for HerbSchildt.com enter

     LastModifiedDemo http://HerbSchildt.com

*/

using System;

using System.Net;

class LastModifiedDemo {

  static void Main(string[] args) {

    if(args.Length != 1) {

      Console.WriteLine("Usage: LastModifiedDemo ");

      return ;

    }

    HttpWebRequest req = (HttpWebRequest)

           WebRequest.Create(args[0]);

    HttpWebResponse resp = (HttpWebResponse)

           req.GetResponse();

    Console.WriteLine("Last modified: " + resp.LastModified);

    resp.Close();

  }

}

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