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WebClient.UseDefaultCredentials Property

Gets or sets a Boolean value that controls whether the DefaultCredentials are sent with requests.

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

Public Property UseDefaultCredentials As Boolean
Dim instance As WebClient 
Dim value As Boolean 

value = instance.UseDefaultCredentials

instance.UseDefaultCredentials = value

Property Value

Type: System.Boolean
true if the default credentials are used; otherwise false. The default value is false.

Set this property to true when requests made by this WebClient object should, if requested by the server, be authenticated using the default credentials of the currently logged on user. For client applications, this is the desired behavior in most scenarios. For middle tier applications, such as ASP.NET applications, instead of using this property, you would typically set the Credentials property to the credentials of the client on whose behalf the request is made.

The following code example demonstrates setting this property.

		'  Sample call: UploadFileInBackground3("http:'", "data.txt") 
		Public Shared Sub UploadFileInBackground3(ByVal address As String, ByVal fileName As String)

			Dim client As WebClient = New WebClient()
                        Dim uri as Uri =  New Uri(address)
			client.UseDefaultCredentials = True 
			AddHandler client.UploadFileCompleted, AddressOf UploadFileCallback2
			client.UploadFileAsync(uri, fileName)
			Console.WriteLine("File upload started.")
		End Sub
// Sample call: UploadFileInBackground3("", "data.txt")
void UploadFileInBackground3 (String* address, String* fileName)
    WebClient* client = new WebClient ();

    client->UseDefaultCredentials = true;
    client->UploadFileCompleted += new UploadFileCompletedEventHandler (UploadFileCallback2);
    client->UploadFileAsync (address, fileName);
    Console::WriteLine (S"File upload started.");

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