Gets or sets the network credentials that are sent to the host and used to authenticate the request.
(in System.dll)
Visual Basic (Declaration)
Public Property Credentials As ICredentials
Dim instance As WebClient
Dim value As ICredentials
value = instance.Credentials
instance.Credentials = value
public ICredentials Credentials { get; set; }
public:
property ICredentials^ Credentials {
ICredentials^ get ();
void set (ICredentials^ value);
}
public function get Credentials () : ICredentials
public function set Credentials (value : ICredentials)
Property Value
Type:
System.Net..::.ICredentialsAn ICredentials containing the authentication credentials for the request. The default is nullNothingnullptra null reference (Nothing in Visual Basic).
The Credentials property contains the authentication credentials used to access a resource on a host. In most client-side scenarios, you should use the DefaultCredentials, which are the credentials of the currently logged on user. To do this, set the UseDefaultCredentials property to true instead of setting this property.
If the WebClient class is being used in a middle tier application, such as an ASP.NET application, the DefaultCredentials belong to the account running the ASP page (the server-side credentials). Typically, you would set this property to the credentials of the client on whose behalf the request is made.
The following code example uses the user's system credentials to authenticate a request.
Public Shared Sub Main()
Try
Dim client As New WebClient()
client.Credentials = CredentialCache.DefaultCredentials
Dim pageData As [Byte]() = client.DownloadData("http://www.contoso.com")
Dim pageHtml As String = Encoding.ASCII.GetString(pageData)
Console.WriteLine(pageHtml)
Catch webEx As WebException
Console.Write(webEx.ToString())
End Try
End Sub
public static void Main()
{
try {
WebClient client = new WebClient();
client.Credentials = CredentialCache.DefaultCredentials;
Byte[] pageData = client.DownloadData("http://www.contoso.com");
string pageHtml = Encoding.ASCII.GetString(pageData);
Console.WriteLine(pageHtml);
} catch (WebException webEx) {
Console.Write(webEx.ToString());
}
}
int main()
{
try
{
WebClient^ client = gcnew WebClient;
client->Credentials = CredentialCache::DefaultCredentials;
array<Byte>^pageData = client->DownloadData( "http://www.contoso.com" );
String^ pageHtml = Encoding::ASCII->GetString( pageData );
Console::WriteLine( pageHtml );
}
catch ( WebException^ webEx )
{
Console::Write( webEx );
}
}
public static function Main()
{
try {
var client : WebClient = new WebClient();
client.Credentials = CredentialCache.DefaultCredentials;
var pageData : Byte[] = client.DownloadData("http://www.contoso.com");
var pageHtml : String = Encoding.ASCII.GetString(pageData);
Console.WriteLine(pageHtml);
} catch (webEx : WebException) {
Console.Write(webEx.ToString());
}
}
int main()
{
try
{
WebClient* client = new WebClient();
client -> Credentials = CredentialCache::DefaultCredentials;
Byte pageData[] = client -> DownloadData(S"http://www.contoso.com");
String* pageHtml = Encoding::ASCII -> GetString(pageData);
Console::WriteLine(pageHtml);
}
catch (WebException* webEx)
{
Console::Write(webEx);
}
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference