Setting the default Button for a TextBox in ASP.NET

JavaScript function

function clickButton(e, buttonid)

{

var evt = e ? e : window.event;

var bt = document.getElementById(buttonid);

if (bt)

{

if (evt.keyCode == 13)

{

bt.click();

return false;

}

}

}

Call on button

<asp:ImageButton ID="ImageButton1" runat="server" Height="50" Width="50" BorderWidth="1"

CssClass="btnimage" ImageUrl="" OnClick="ImageButton1_Click" />

<input name="TextBox1" type="text" id="TextBox1" onkeypress="return clickButton(event,'ImageButton1')"  />

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Encryption and Decryption in Asp.Net c#

using Microsoft.VisualBasic;

using System;

using System.IO;

using System.Xml;

using System.Text;

using System.Security.Cryptography;

using System.Data;

using System.Configuration;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

public class clsEncryption

{

private byte[] key = { };

private byte[] IV = { 18, 52, 86, 120, 144, 171, 205, 239 };

public clsEncryption()

{

}

public string Decryptpwd(string stringToDecrypt)

{

stringToDecrypt = stringToDecrypt.Replace(" ", "+");

string sEncryptionKey = "!*&@9876543210";

byte[] inputByteArray = new byte[stringToDecrypt.Length + 1];

try

{

key = System.Text.Encoding.UTF8.GetBytes(sEncryptionKey.Substring(0, 8));

DESCryptoServiceProvider des = new DESCryptoServiceProvider();

inputByteArray = Convert.FromBase64String(stringToDecrypt);

MemoryStream ms = new MemoryStream();

CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(key, IV), CryptoStreamMode.Write);

cs.Write(inputByteArray, 0, inputByteArray.Length);

cs.FlushFinalBlock();

System.Text.Encoding encoding = System.Text.Encoding.UTF8;

return encoding.GetString(ms.ToArray());

}

catch (Exception e)

{

//HttpContext.Current.Response.Redirect("~/PR_error.aspx");

throw;

return e.Message;

}

}

public string Encryptpwd(string stringToEncrypt)

{

try

{

string SEncryptionKey = "!*&@9876543210";

key = System.Text.Encoding.UTF8.GetBytes(SEncryptionKey.Substring(0, 8));

DESCryptoServiceProvider des = new DESCryptoServiceProvider();

byte[] inputByteArray = Encoding.UTF8.GetBytes(stringToEncrypt);

MemoryStream ms = new MemoryStream();

CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(key, IV), CryptoStreamMode.Write);

cs.Write(inputByteArray, 0, inputByteArray.Length);

cs.FlushFinalBlock();

return Convert.ToBase64String(ms.ToArray());

}

catch (Exception e)

{

HttpContext.Current.Response.Redirect("~/Logout.aspx");

return e.Message;

}

}

public String Decrypt(String strText)

{

int i, l, n, pl;

String strPwd = strText;// "";

char[] s, sp;

String strBuff = "";

if (strPwd.Length > 0)

{

s = strText.ToCharArray();

l = s.Length;

sp = strPwd.ToCharArray();

pl = sp.Length;

for (i = 0; i < l; i++)

{

n = (int)s[i];

n = n - ((int)sp[i % pl]);

strBuff = strBuff + (char)(n & 0xFF);

}

}

else

strBuff = strText;

return strBuff;

}

public String Encrypt(String strText)

{

int i, n;

String strPwd = strText;// "WAIS";

String strBuff = "";

int l = strText.Length, pl = strPwd.Length;

if (strPwd.Length > 0)

{

char[] s = strText.ToCharArray();

char[] sp = strPwd.ToCharArray();

l = s.Length;

for (i = 0; i < l; i++)

{

n = (int)s[i];

n = n + sp[i % pl];  //Asc(Mid$(strPwd, (i Mod Len(strPwd)) + 1, 1))

strBuff = strBuff + (char)(n & 0xFF);

}

}

else

strBuff = strText;

return strBuff;

}

internal string Encryptpwd(DataRow dataRow)

{

throw new NotImplementedException();

}

}

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