C#

<br />
        protected override void CreateChildControls()<br />
        {<br />
            DataTable data = null;<br />
            string[] columnArray = null;<br />
            bool IsColumns = false;<br />
            DataTableValidationStatus tableStatus;<br />
<br />
            try<br />
            {<br />
                if (!String.IsNullOrEmpty(Columns))<br />
                {<br />
                    columnArray = Columns.Replace(" ", "").Split(',');<br />
                    IsColumns = true;<br />
                }<br />
<br />
                data = GetDataTable();<br />
                tableStatus = Utility.ValidateDataTable(data, true, true, IsColumns, columnArray);<br />
<br />
                if (tableStatus == DataTableValidationStatus.Valid)<br />
                {<br />
                    data.Locale = System.Globalization.CultureInfo.InvariantCulture;<br />
<br />
                    grid.EnableViewState = true;<br />
                    grid.AutoGenerateColumns = false;<br />
                    grid.AllowPaging = true;<br />
                    grid.PageSize = PageSize;<br />
                    grid.CurrentPageIndex = currentpageindex;<br />
                    grid.PagerStyle.Mode = PagerMode.NextPrev;<br />
                    grid.PagerStyle.CssClass = PagerStyleCssClass;<br />
<br />
                    grid.CssClass = GridCssClass;<br />
                    grid.AlternatingItemStyle.CssClass = AlternatCssClass;<br />
                    grid.HeaderStyle.CssClass = HeaderCssClass;<br />
                    grid.ItemStyle.CssClass = ItemCssClass;<br />
<br />
                    grid.Width = System.Web.UI.WebControls.Unit.Percentage(100);<br />
<br />
                    grid.PageIndexChanged += new DataGridPageChangedEventHandler(this.grid_PageIndexChanged);<br />
<br />
                    grid.DataSource = data;<br />
                    grid.DataBind();<br />
                    Controls.Add(grid);<br />
                }<br />
}<br />
<br />
        private void grid_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)<br />
        {<br />
            currentpageindex = e.NewPageIndex;<br />
            BindGrid();<br />
        }<br />

<br />
using System;<br />
using System.Collections.Generic;<br />
using System.ComponentModel;<br />
using System.Data;<br />
using System.Drawing;<br />
using System.Text;<br />
using System.Windows.Forms;<br />
using System.Security.Cryptography;<br />
using System.IO;<br />
<br />
namespace PruebaSimetrica<br />
{<br />
    public partial class Form1 : Form<br />
    {<br />
        public Form1()<br />
        {<br />
            InitializeComponent();<br />
        }<br />
<br />
        private void Form1_Load(object sender, EventArgs e)<br />
        {<br />
<br />
        }<br />
<br />
        private void btnCph1_Click(object sender, EventArgs e)<br />
        {<br />
            //Gererate a Key and IV<br />
            byte[] RellenoKey = new byte[] { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF };<br />
            byte[] RellenoIV = new byte[] { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF };<br />
            // Create a new Rijndael object.<br />
            Rijndael RijndaelAlg = Rijndael.Create();<br />
            RijndaelAlg.Key = RellenoKey;<br />
            RijndaelAlg.IV = RellenoIV;<br />
            //Get the plain text<br />
            byte[] bytePlainText = Encoding.Default.GetBytes(txtSrc.Text);<br />
            byte[] byteCryptText;<br />
            <br />
            bytePlainText = Encoding.Default.GetBytes(txtSrc.Text);<br />
<br />
            MemoryStream mStream = new MemoryStream();<br />
            // Create a CryptoStream using the MemoryStream <br />
            // and the passed key and initialization vector (IV).<br />
            CryptoStream cStream = new CryptoStream(mStream, RijndaelAlg.CreateEncryptor(RijndaelAlg.Key, RijndaelAlg.IV), CryptoStreamMode.Write);<br />
<br />
            cStream.Write(bytePlainText, 0, bytePlainText.Length);<br />
            cStream.FlushFinalBlock();<br />
                        <br />
            byteCryptText = mStream.ToArray();<br />
<br />
            lblcph1.Text = System.Text.Encoding.Default.GetString(byteCryptText);<br />
            <br />
            cStream.Close();<br />
            mStream.Close();<br />
        }<br />
<br />
        private void btnCph2_Click(object sender, EventArgs e)<br />
        {<br />
            //Gererate the same Key and IV<br />
            byte[] RellenoKey = new byte[] { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF };<br />
            byte[] RellenoIV = new byte[] { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF };<br />
            Rijndael RijndaelAlg = Rijndael.Create();<br />
            RijndaelAlg.Key = RellenoKey;<br />
            RijndaelAlg.IV = RellenoIV;<br />
            byte[] bytePlainText  ;<br />
            byte[] byteCryptText=Encoding.Default.GetBytes(lblcph1.Text);<br />
<br />
            byteCryptText = Encoding.Default.GetBytes(lblcph1.Text);<br />
<br />
            MemoryStream mStream = new MemoryStream();<br />
<br />
            CryptoStream cStream = new CryptoStream(mStream, RijndaelAlg.CreateEncryptor(RijndaelAlg.Key, RijndaelAlg.IV), CryptoStreamMode.Write);<br />
<br />
            cStream.Write(byteCryptText, 0, byteCryptText.Length);<br />
            cStream.FlushFinalBlock();<br />
<br />
            bytePlainText = mStream.ToArray();<br />
<br />
            lblCph2.Text = System.Text.Encoding.Default.GetString(bytePlainText);<br />
<br />
            cStream.Close();<br />
            mStream.Close();<br />
        }<br />
 <br />
    }<br />
}