HttpWebResponse.LastModified Property

Reference

Definition

Namespace:: System.Net

Assembly:: System.Net.Requests.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Source:: HttpWebResponse.cs

Source:: HttpWebResponse.cs

Source:: HttpWebResponse.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public:
 property DateTime LastModified { DateTime get(); };

public DateTime LastModified { get; }

member this.LastModified : DateTime

Public ReadOnly Property LastModified As DateTime

Property Value

DateTime

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

Exceptions

ObjectDisposedException

The current instance has been disposed.

Examples

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 = gcnew 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}",
      myHttpWebResponse->StatusDescription );
}
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" );
}      
else if ( DateTime::Compare( today, myHttpWebResponse->LastModified ) == 1 )
{
   Console::WriteLine( "\nThe requested URI was last modified on: {0}",
      myHttpWebResponse->LastModified );
}
// Releases the resources of the response.
myHttpWebResponse->Close();

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}",
                            myHttpWebResponse.StatusDescription);
    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");
    else
        if (DateTime.Compare(today,myHttpWebResponse.LastModified) == 1)
            Console.WriteLine("\nThe requested URI was last modified on:{0}",
                                myHttpWebResponse.LastModified);
    // Releases the resources of the response.
    myHttpWebResponse.Close();

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()

Remarks

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.

Applies to

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