¿Cómo verifico si hay una respuesta 302? WebRequest

Question

Usando WebRequest Quiero saber si me da un

"302 trasladó temporalmente"

respuesta en lugar de obtener automáticamente la nueva URL.

Answer 1

Si desea detectar una respuesta de redirección, en lugar de seguir automáticamente a crear el WebRequest y establezca la propiedad AllowAutoRedirect a false:

HttpWebRequest request = WebRequest.Create(someUrl) as HttpWebRequest; 
request.AllowAutoRedirect = false; 
HttpWebResponse response = request.GetResponse() as HttpWebResponse; 
if (response.StatusCode == HttpStatusCode.Redirect || 
    response.StatusCode == HttpStatusCode.MovedPermanently) 
{ 
    // Do something here... 
    string newUrl = response.Headers["Location"]; 
} 

Answer 2

así:

HttpWebResponse response; 
int code = (int) response.StatusCode; 

El código debe ser

HttpStatusCode.TemporaryRedirect 

Answer 3

VB Net Cod e

Function GetRealUrl(someUrl As String) As String 
     Dim req As HttpWebRequest = TryCast(WebRequest.Create(someUrl), HttpWebRequest) 
     req.AllowAutoRedirect = False 
     Dim response As HttpWebResponse = TryCast(req.GetResponse(), HttpWebResponse) 
     If response.StatusCode = HttpStatusCode.Redirect OrElse response.StatusCode = HttpStatusCode.MovedPermanently Then 
      ' Do something... 
      Dim newUrl As String = response.Headers("Location") 
      getrealurl = newUrl 
     Else 
      getrealurl = someUrl 
     End If 
End Function