WebRequest.Credentials 属性

定义

命名空间:

System.Net

程序集:

System.Net.Requests.dll

Source:

WebRequest.cs

当在子类中被重写时，获取或设置用于对 Internet 资源请求进行身份验证的网络凭据。

public:
 virtual property System::Net::ICredentials ^ Credentials { System::Net::ICredentials ^ get(); void set(System::Net::ICredentials ^ value); };

public virtual System.Net.ICredentials? Credentials { get; set; }

member this.Credentials : System.Net.ICredentials with get, set

Public Overridable Property Credentials As ICredentials

属性值

ICredentials

包含与该请求关联的身份验证凭据的 ICredentials。 默认值为 null。

例外

NotImplementedException

当未在子类中重写该属性时，试图获取或设置该属性。

示例

以下示例使用当前用户的默认凭据设置 Credentials 属性。 发出请求时，此属性中存储的凭据用于验证客户端。 这与将 UseDefaultCredentials 属性设置为 true相同。

// Create a request for the URL.   
WebRequest^ request = WebRequest::Create( "http://www.contoso.com/default.html" );

// If required by the server, set the credentials.
request->Credentials = CredentialCache::DefaultCredentials;

// Get the response.
HttpWebResponse^ response = dynamic_cast<HttpWebResponse^>(request->GetResponse());

// Create a request for the URL. 		
WebRequest request = WebRequest.Create ("http://www.contoso.com/default.html");
// If required by the server, set the credentials.
request.Credentials = CredentialCache.DefaultCredentials;
// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse ();

' Create a request for the URL. 		
Dim request As WebRequest = WebRequest.Create("http://www.contoso.com/default.html")
' If required by the server, set the credentials.
request.Credentials = CredentialCache.DefaultCredentials
' Get the response.
Dim response As HttpWebResponse = CType(request.GetResponse(), HttpWebResponse)

注解

属性 Credentials 包含访问 Internet 资源所需的身份验证凭据。

注意

类 WebRequest 是类 abstract 。 实例在运行时的实际行为 WebRequest 由 方法返回 WebRequest.Create 的后代类决定。 有关默认值和异常的详细信息，请参阅后代类的文档，例如 HttpWebRequest 和 FileWebRequest。

另请参阅

• NetworkCredential
• CredentialCache
• Credentials