Encryption & Decryption using MD5 Algorithm

If sumbody wants to try his hands on encryption & decryption using MD5 algorithm, then below are the two functions :


using System.Text;
using System.Security.Cryptography;

public static string EncryptMd5(string sOriginal)
{
string sPassKey = "16";
byte[] sPassKeyArray;
byte[] sOriginalArray = UTF8Encoding.UTF8.GetBytes(sOriginal);
MD5CryptoServiceProvider MD5Hash = new MD5CryptoServiceProvider();
sPassKeyArray = MD5Hash.ComputeHash(UTF8Encoding.UTF8.GetBytes(sPassKey));
MD5Hash.Clear();
TripleDESCryptoServiceProvider tripleDesCsp = new TripleDESCryptoServiceProvider();
tripleDesCsp.Key = sPassKeyArray;
tripleDesCsp.Mode = CipherMode.ECB;
tripleDesCsp.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = tripleDesCsp.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(sOriginalArray, 0, sOriginalArray.Length);
tripleDesCsp.Clear();
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}

public static string DecryptMd5(string sToOriginal)
{
string sPassKey = "16";
byte[] sPassKeyArray;
byte[] sOriginalArray = Convert.FromBase64String(sToOriginal);
MD5CryptoServiceProvider MD5Hash = new MD5CryptoServiceProvider();
sPassKeyArray = MD5Hash.ComputeHash(UTF8Encoding.UTF8.GetBytes(sPassKey));
MD5Hash.Clear();
TripleDESCryptoServiceProvider tripleDesCsp = new TripleDESCryptoServiceProvider();
tripleDesCsp.Key = sPassKeyArray;
tripleDesCsp.Mode = CipherMode.ECB;
tripleDesCsp.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = tripleDesCsp.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(sOriginalArray, 0, sOriginalArray.Length);
tripleDesCsp.Clear();
return UTF8Encoding.UTF8.GetString(resultArray);
}

GridView bug that fire RowCommand twice

I was trying my hands on .NET 3.5, and discovered that Gridview was firing Rowcommand twice for my ImageButton that is drawn using ButtonField Column. Later I found that this is a bug/unexpected behaviour from out of the box Gridview. I found some solution on internet that can be seen in detail here:
http://forums.asp.net/p/1002747/1324414.aspx#1324414
It mainly suggest to use TemplateField column with imagebutton, as Imagebutton is not quite compatible with ButtonField. Rest you can read above for details on it.

Sorting XML With System.Xml.XPath.XPathExpression

If you want to retrieve a sorted list of nodes from an XmlDocument instance, there are a couple ways to do this. You can use XSLT, or you can write your own sorting algorithm. The .NET Framework provides capability to provide sort orders to the result of an xpath query through the System.Xml.XPath.XPathExpression::AddSort method. Here is a simplistic demo:

static void Main(string[] args)

{

XmlDocument doc = new XmlDocument();

doc.LoadXml("5361");

XPathNavigator nav = doc.CreateNavigator();

string path = "/a/b";

XPathExpression expression = nav.Compile(path);

expression.AddSort("text()", XmlSortOrder.Ascending, XmlCaseOrder.None, string.Empty, XmlDataType.Number);

XPathNodeIterator iterator = nav.Select(expression);

while (iterator.MoveNext())

{

Console.WriteLine(iterator.Current.Value);

}

}