X509Certificate.CreateFromCertFile(String) 方法
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。
依据指定的 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);
static member CreateFromCertFile : string -> System.Security.Cryptography.X509Certificates.X509Certificate
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
static member CreateFromCertFile : string -> System.Security.Cryptography.X509Certificates.X509Certificate
Public Shared Function CreateFromCertFile (filename As String) As X509Certificate
参数
- filename
- String
从中创建 X.509 证书的 PKCS7 签名文件的名称。
返回
新创建的 X.509 证书。
- 属性
例外
filename
参数为 null
。
示例
以下示例从指定的认证文件创建一个 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 是此类支持的唯一证书格式。
备注
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。