ServicePoint.Certificate 属性
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。
获取为此 ServicePoint 对象收到的证书。
public:
property System::Security::Cryptography::X509Certificates::X509Certificate ^ Certificate { System::Security::Cryptography::X509Certificates::X509Certificate ^ get(); };public System.Security.Cryptography.X509Certificates.X509Certificate? Certificate { get; }public System.Security.Cryptography.X509Certificates.X509Certificate Certificate { get; }member this.Certificate : System.Security.Cryptography.X509Certificates.X509CertificatePublic ReadOnly Property Certificate As X509Certificate包含为此 ServicePoint 对象接收的安全证书的 X509Certificate 类的实例。
下面的代码示例显示此属性的值。
if ( sp->Certificate == nullptr )
Console::WriteLine( "Certificate = (null)" );
else
Console::WriteLine( "Certificate = {0}", sp->Certificate );
if ( sp->ClientCertificate == nullptr )
Console::WriteLine( "Client Certificate = (null)" );
else
Console::WriteLine( "Client Certificate = {0}", sp->ClientCertificate );
Console::WriteLine( "ProtocolVersion = {0}", sp->ProtocolVersion->ToString() );
Console::WriteLine( "SupportsPipelining = {0}", sp->SupportsPipelining );
if (sp.Certificate == null)
Console.WriteLine("Certificate = (null)");
else
Console.WriteLine("Certificate = " + sp.Certificate.ToString());
if (sp.ClientCertificate == null)
Console.WriteLine("ClientCertificate = (null)");
else
Console. WriteLine("ClientCertificate = " + sp.ClientCertificate.ToString());
Console.WriteLine("ProtocolVersion = " + sp.ProtocolVersion.ToString());
Console.WriteLine("SupportsPipelining = " + sp.SupportsPipelining);
If sp.Certificate Is Nothing Then
Console.WriteLine("Certificate = (null)")
Else
Console.WriteLine(("Certificate = " + sp.Certificate.ToString()))
End If
If sp.ClientCertificate Is Nothing Then
Console.WriteLine("ClientCertificate = (null)")
Else
Console.WriteLine(("ClientCertificate = " + sp.ClientCertificate.ToString()))
End If
Console.WriteLine("ProtocolVersion = " + sp.ProtocolVersion.ToString())
Console.WriteLine(("SupportsPipelining = " + sp.SupportsPipelining.ToString()))
注意
WebRequest、HttpWebRequest、ServicePoint和 WebClient 已过时，不应将其用于新开发。 请改用 HttpClient。
尽管 ServicePoint 对象可以与 Internet 资源建立多个连接，但它只能维护一个证书。
备注
在 .NET Core 和 .NET 5+ 中，Certificate 属性始终返回 null。 若要访问服务器证书，请使用 ServerCertificateCustomValidationCallback。
| 产品 | 版本 |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
