LastModified Property

HttpWebResponse.LastModified Property


Gets the last date and time that the contents of the response were modified.

Namespace:   System.Net
Assembly:  System (in System.dll)

public DateTime LastModified { get; }

Property Value

Type: System.DateTime

A DateTime that contains the date and time that the contents of the response were modified.

Exception Condition

The current instance has been disposed.

The LastModified property contains the value of the Last-Modified header received with the response. The date and time are assumed to be local time.

This example creates an HttpWebRequest and queries for a response. This example then checks whether the entity requested had been modified any time today.

        Uri myUri = new Uri(url);
// Creates an HttpWebRequest for the specified URL. 
HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(myUri); 
HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
if (myHttpWebResponse.StatusCode == HttpStatusCode.OK)
	Console.WriteLine("\r\nRequest succeeded and the requested information is in the response , Description : {0}",
DateTime today = DateTime.Now;
// Uses the LastModified property to compare with today's date.
if (DateTime.Compare(today,myHttpWebResponse.LastModified) == 0)
	Console.WriteLine("\nThe requested URI entity was modified today");
	if (DateTime.Compare(today,myHttpWebResponse.LastModified) == 1)
		Console.WriteLine("\nThe requested URI was last modified on:{0}",
// Releases the resources of the response.

.NET Framework
Available since 1.1
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