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 bool UseDefaultCredentials { get; set; }

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://www.contoso.com/fileUpload.aspx", "data.txt")
    public static void UploadFileInBackground3 (string address, string fileName)
    {
        WebClient client = new WebClient ();

        Uri uri = new Uri(address);

        client.UseDefaultCredentials = true;
        client.UploadFileCompleted += new UploadFileCompletedEventHandler (UploadFileCallback2);
        client.UploadFileAsync (uri, fileName);
        Console.WriteLine ("File upload started.");
    }



.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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