WebClient.UseDefaultCredentials 属性
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
获取或设置 Boolean 值,该值控制 DefaultCredentials 是否随请求一起发送。
public:
property bool UseDefaultCredentials { bool get(); void set(bool value); };
public bool UseDefaultCredentials { get; set; }
member this.UseDefaultCredentials : bool with get, set
Public Property UseDefaultCredentials As Boolean
属性值
如果使用默认凭据,则为 true
;否则为 false
。 默认值为 false
。
示例
下面的代码示例演示如何设置此属性。
// Sample call: UploadFileInBackground3("http://www.contoso.com/fileUpload.aspx", "data.txt")
void UploadFileInBackground3( String^ address, String^ fileName )
{
WebClient^ client = gcnew WebClient;
Uri ^uri = gcnew Uri(address);
client->UseDefaultCredentials = true;
client->UploadFileCompleted += gcnew UploadFileCompletedEventHandler( UploadFileCallback2 );
client->UploadFileAsync( uri, fileName );
Console::WriteLine( "File upload started." );
}
// 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.");
}
' Sample call: UploadFileInBackground3("http:' www.contoso.com/fileUpload.aspx", "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
注解
当此WebClient对象发出的请求应使用当前登录用户的默认凭据进行身份验证(如果服务器请求)时,请将此属性true
设置为 。 对于客户端应用程序,这是在大多数情况下所需的行为。 对于中间层应用程序(例如 ASP.NET 应用程序),通常将 属性设置为 Credentials 代表其发出请求的客户端的凭据,而不是使用此属性。
适用于
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