Organize Usings

Once we have created our class. In that class we use the using statment at the top of the class.To include namespaces in our class. But sometimes we realize after compeleting the code of that calss we have used some extra namespaces which are of no use in th class to remove all those unused using statment. we can use InteliSense in the edit menu. in the submenu of InteliSense we will find the option organize usings. and in its sub menu we hve the options to remove unused usings to sort usings and to remove and sort usings.

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Thanks and Regards
Meetu Choudhary

Format document

To format any document (.cs,XML,aspx,HTML etc) in visual studio 2008
use the following key combinations:
To format whole document : ctrl +k ,(followed by) ctrl + d
To format the selection : ctrl +k, (followed by) ctrl +f

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Thanks and Regards
Meetu Choudhary

Accessing the properties of a digital signature

Now once we have selected the certificate. We need to access the properties of the certificate. Here is a small piece of code to access all the properties which may be helpful to us for any context.

before accessing these properties we have to set the certificate object. for that you can get the code from any of the two previous articles.
1. Article link , Mirror link
2. Article link , Mirror link


Now once we have the certificate (X509Certificate2 x509_2;)
we can o with the following code

[code]

///

/// Set All the Properties of the Certificate

///

public Boolean SetProperties()

{

if (x509_2 != null)

{

RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)x509_2.PublicKey.Key;

_PublicKey_Key =_PublicKeyXML = rsa.ToXmlString(false);

//_PrivateKeyXML = rsa.ToXmlString(true );

_PrivateKeyXML=_Private_Key = x509_2.PrivateKey.ToXmlString(false);

_PKeyExchangeAlgorithm = x509_2.PrivateKey.KeyExchangeAlgorithm;

_PublicKey = x509_2.GetPublicKeyString();

//_PublicKey_Key = Convert.ToString(x509_2.PublicKey.Key);

_SerialNumber = x509_2.GetPublicKeyString();

_Thumbprint = x509_2.Thumbprint;

_RawCertDataString = x509_2.GetRawCertDataString();

_FriendlyName = x509_2.FriendlyName;

_HashString = x509_2.GetCertHashString();

_EffectiveDate = x509_2.GetEffectiveDateString();

_ExpirationDate = x509_2.GetExpirationDateString();

_Format = x509_2.GetFormat();

_IssuerName = x509_2.GetIssuerName();

_KeyAlgorithm = x509_2.GetKeyAlgorithm();

_KeyAlgorithmParameters = x509_2.GetKeyAlgorithmParametersString();

_CertName = x509_2.GetName();

_CertSubject = x509_2.Subject;

_CertVersion = x509_2.Version;

_SignatureAlgorithm_Value = x509_2.SignatureAlgorithm.Value;

_SignatureAlgorithm_ToString = x509_2.SignatureAlgorithm.ToString();

_SignatureAlgorithm_FriendlyName = x509_2.SignatureAlgorithm.FriendlyName;

return true;

}

else { return false; }

}

[/code]

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Thanks and Regards
Meetu Choudhary

Open Certificate Stores Including Certificates in Token

In My Previous article Mirror Link I have shown how to open a certificate store (Machine certificate store which is displayed in the Internet Explorer.) but the drawback of that code was it can't open the certificates stored in the token. so here is another method which will overcome the drawback stated above. It will open the certificates of the machine store as well as of the tokens.

[code]
///

/// Opens the Certificate Store of IE including the Certificates in Token

///

/// The variable passed to store the reason if function returns false

/// True if a certificate is selected and false if no certificate is selected

public Boolean OpenStoreToken(ref string popupScript)

{

x509_2 = null;

//Create and Initilaize a variable of x509Store providing the store name and the store location

X509Store st = new X509Store(StoreName.My, StoreLocation.CurrentUser);

//Create X509Certificate2Collection

X509Certificate2Collection col = new X509Certificate2Collection();

//Create X509Certificate2Collection

X509Certificate2Collection sel = new X509Certificate2Collection();

//Create X509Certificate2Enumerator

X509Certificate2Enumerator en;// =new X509Certificate2Enumerator();

//Open the Store for readonly purpose

st.Open(OpenFlags.ReadOnly);

//set the col i.e. X509Certificate2Collection to the collection of the certificates stored in the IE and the Token

col = st.Certificates;

//set the sel i.e. X509Certificate2Collection which actuly displays a dialog box for selecting an X.509 certificate from a certificate collection.

sel = X509Certificate2UI.SelectFromCollection(col, "Certificates", "Select one to sign", X509SelectionFlag.SingleSelection);

if (sel.Count > 0)

{

en = sel.GetEnumerator();

en.MoveNext();

x509_2 = en.Current;

}

st.Close();

if (x509_2 == null)

{

popupScript = "You didn't select a certificate!!!";

return false;

}

else

{

return true;

}

}



[/code]

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Thanks and Regards
Meetu Choudhary