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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)

'Declaration
Public ReadOnly Property LastModified As DateTime

Property Value

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

ExceptionCondition
ObjectDisposedException

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.

Dim myUri As New Uri(url)
' Creates an HttpWebRequest for the specified URL. 
Dim myHttpWebRequest As HttpWebRequest = CType(WebRequest.Create(myUri), HttpWebRequest)
Dim myHttpWebResponse As HttpWebResponse = CType(myHttpWebRequest.GetResponse(), HttpWebResponse)
If myHttpWebResponse.StatusCode = HttpStatusCode.OK Then
    Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "Request succeeded and the requested information is in the response , Description : {0}", myHttpWebResponse.StatusDescription)
End If 
Dim today As DateTime = DateTime.Now
' Uses the LastModified property to compare with today's date. 
If DateTime.Compare(today, myHttpWebResponse.LastModified) = 0 Then
    Console.WriteLine(ControlChars.Cr + "The requested URI entity was modified today")
Else 
    If DateTime.Compare(today, myHttpWebResponse.LastModified) =  1 Then
        Console.WriteLine(ControlChars.Cr + "The requested Uri was last modified on:{0}", myHttpWebResponse.LastModified)
    End If 
End If 
' Releases the resources of the response.
myHttpWebResponse.Close()

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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