.NET (Core and Framework)

I thought these were merely syntactical sugar offered by the 3.5 compiler, but would compile down to normal getters and setters that would work on the 2.0 framework.  Yes, when I try and ‘down-grade’ a 3.5 project to 2.0, I get compiler errors for automatic properties.  Is this just something I have to live with, or is there another way?<o:p>

SerialPort s = new SerialPort("com3", 2400, Parity.None, 8, StopBits.One);<br />
try{<br />
s.Open();<br />
s.Write("atdt8889653");<br />
...<br />
}<br />
catch<br />
{<br />
...<br />
}

// Create a new CspParameters object that identifies a<br />
// Smart Card CryptoGraphic Provider.<br />
CspParameters csp = new CspParameters(1, "Datakey RSA CSP");<br />
csp.Flags = CspProviderFlags.UseDefaultKeyContainer;<br />
<br />
//password do token<br />
System.Security.SecureString pwd = new System.Security.SecureString();<br />
pwd.AppendChar('1'); pwd.AppendChar('2'); pwd.AppendChar('3'); pwd.AppendChar('4');<br />
csp.KeyPassword = pwd;<br />
<br />
csp.KeyNumber = (int)KeyNumber.Signature;<br />
<br />
// Initialize an RSACryptoServiceProvider object using<br />
// the CspParameters object.<br />
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(csp);<br />
<br />
// Create some data to sign.<br />
byte[] data = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7 };<br />
<br />
Console.WriteLine("Data         : " + BitConverter.ToString(data));<br />
<br />
// Sign the data using the Smart Card CryptoGraphic Provider.<br />
byte[] sig = rsa.SignData(data, "SHA1");<br />
<br />
Console.WriteLine("Signature    : " + BitConverter.ToString(sig));<br />
<br />
// Verify the data using the Smart Card CryptoGraphic Provider.<br />
bool verified = rsa.VerifyData(data, "SHA1", sig);<br />
<br />
Console.WriteLine("Verified     : " + verified);

static public byte[] SignMsg2(Byte[] msg, X509Certificate2 signerCert, bool detached)<br />
{<br />
    //  Place message in a ContentInfo object.<br />
    //  This is required to build a SignedCms object.<br />
    ContentInfo contentInfo = new ContentInfo(msg);<br />
<br />
    //  Instantiate SignedCms object with the ContentInfo above.<br />
    //  Has default SubjectIdentifierType IssuerAndSerialNumber.<br />
    SignedCms signedCms = new SignedCms(contentInfo, detached);<br />
<br />
<br />
    CspParameters csp = new CspParameters(1, "Datakey RSA CSP");<br />
    csp.Flags = CspProviderFlags.UseDefaultKeyContainer;<br />
<br />
<br />
    //password do token<br />
    System.Security.SecureString pwd = new System.Security.SecureString();<br />
    pwd.AppendChar('1'); pwd.AppendChar('2'); pwd.AppendChar('3'); pwd.AppendChar('4');<br />
    csp.KeyPassword = pwd;<br />
<br />
    csp.KeyNumber = (int)KeyNumber.Signature;<br />
    csp.Flags = CspProviderFlags.NoPrompt;      //no prompt for the pin!<br />
<br />
    //Formulate a CmsSigner object for the signer.<br />
    CmsSigner cmsSigner = new CmsSigner(csp);<br />
<br />
    // Include the following line if the top certificate in the<br />
    // smartcard is not in the trusted list.<br />
    cmsSigner.IncludeOption = X509IncludeOption.EndCertOnly;<br />
<br />
    //  Sign the CMS/PKCS #7 message. The second argument is<br />
    //  needed to ask for the pin.<br />
    signedCms.ComputeSignature(cmsSigner, false);<br />
<br />
    //  Encode the CMS/PKCS #7 message.<br />
    return signedCms.Encode();<br />
}