将CER转换为PFX时出现强制错误（用于添加到Azure门户）

Azure门户不允许我添加Cer文件。我发现一则讯息说您可以输入名称，您只能在公开对话中输入名称，但无法使用

因此，我尝试使用放置在Global.asax中的代码转换文件。我已将CER文件复制到C驱动器根目录下的临时目录中

这是代码和我得到的错误：

    string file = @"C:\temp\SVRSecureG3.cer";
    var cert = System.Security.Cryptography.X509Certificates.X509Certificate2.CreateFromCertFile(file);

    // Error occurs on the line below, I get : {"Unable to cast object of type 'System.Security.Cryptography.X509Certificates.X509Certificate' to type 'System.Security.Cryptography.X509Certificates.X509Certificate2'."}
    var bytes = ((System.Security.Cryptography.X509Certificates.X509Certificate2)cert).Export(System.Security.Cryptography.X509Certificates.X509ContentType.Pfx, "p"); 

    var fs = File.Create(@"C:\temp\SVRSecureG3.pfx");

    using (fs)
    {
        fs.Write(bytes, 0, bytes.Length);
        fs.Flush();
    }