X509Certificate.CreateFromCertFile(String) 方法

定义

注意

Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.

从指定的 PKCS7 签名文件创建 X.509v3 证书。

public:
 static System::Security::Cryptography::X509Certificates::X509Certificate ^ CreateFromCertFile(System::String ^ filename);
public static System.Security.Cryptography.X509Certificates.X509Certificate CreateFromCertFile (string filename);
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public static System.Security.Cryptography.X509Certificates.X509Certificate CreateFromCertFile (string filename);
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Security.Cryptography.X509Certificates.X509Certificate CreateFromCertFile (string filename);
static member CreateFromCertFile : string -> System.Security.Cryptography.X509Certificates.X509Certificate
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
static member CreateFromCertFile : string -> System.Security.Cryptography.X509Certificates.X509Certificate
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
[<System.Obsolete("Loading certificate data through the constructor or Import is obsolete. Use X509CertificateLoader instead to load certificates.", DiagnosticId="SYSLIB0057", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member CreateFromCertFile : string -> System.Security.Cryptography.X509Certificates.X509Certificate
Public Shared Function CreateFromCertFile (filename As String) As X509Certificate

参数

filename
String

要从中创建 X.509 证书的 PKCS7 签名文件的路径。

返回

新创建的 X.509 证书。

属性

例外

filename 参数 null

示例

以下示例从指定的认证文件创建 X509Certificate

using namespace System;
using namespace System::Security::Cryptography::X509Certificates;
int main()
{
   
   // The path to the certificate.
   String^ Certificate = "Certificate.cer";
   
   // Load the certificate into an X509Certificate object.
   X509Certificate^ cert = X509Certificate::CreateFromCertFile( Certificate );
   
   // Get the value.
   String^ resultsTrue = cert->ToString( true );
   
   // Display the value to the console.
   Console::WriteLine( resultsTrue );
   
   // Get the value.
   String^ resultsFalse = cert->ToString( false );
   
   // Display the value to the console.
   Console::WriteLine( resultsFalse );
}
using System;
using System.Security.Cryptography.X509Certificates;

public class X509
{
    public static void Main()
    {
        // The path to the certificate.
        string Certificate =  "Certificate.cer";

        // Load the certificate into an X509Certificate object.
        X509Certificate cert = X509Certificate.CreateFromCertFile(Certificate);

        // Get the value.
        string resultsTrue = cert.ToString(true);

        // Display the value to the console.
        Console.WriteLine(resultsTrue);

        // Get the value.
        string resultsFalse = cert.ToString(false);

        // Display the value to the console.
        Console.WriteLine(resultsFalse);
    }
}
Imports System.Security.Cryptography.X509Certificates




Public Class X509
   
   
   Public Shared Sub Main()
      
      ' The path to the certificate.
      Dim Certificate As String = "Certificate.cer"
      
      ' Load the certificate into an X509Certificate object.
      Dim cert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
      
      ' Get the value.
      Dim resultsTrue As String = cert.ToString(True)
      
      ' Display the value to the console.
      Console.WriteLine(resultsTrue)
      
      ' Get the value.
      Dim resultsFalse As String = cert.ToString(False)
      
      ' Display the value to the console.
      Console.WriteLine(resultsFalse)
   End Sub  
End Class

注解

ASN.1 DER 是唯一此类支持的证书格式。

注意

证书文件不限于.cer文件。 可以使用任何 PKCS7 签名文件,包括验证码签名的 .pfx 文件。

适用于