Navigation From One Page to Another Page with Data.

Navigation From One Page to Another Page with Data.

There are various ways to send the data from one page to other

1> Using QueryString.

e.g. In first page you can write as follows : Response.Redirect("mypage.aspx?id=" + value from control or variable or anystring); mypage.aspx?id=10 Above dummy my page now contains id as the query string and It can be retrieved on the other page as follows : string id = Request.QueryString["id"].ToString();

2> Using Session. e.g. You can create session in first page like. Session["id"] = value from control or variable or anystring; and you can retrive it from other page as following: string id = Session["id"].ToString();

3>Using Cookies e.g. You can write cookie as in first page as follows : Response.Cookies["id"].Value = value from control or variable or anystring; and to retrive cookie you can request it as follows: string id = Request.Cookies["BackgroundColor"].Value.ToString();

Advanced Diploma in Software Development

Advanced Diploma in Software Development (ADSD) About ADSD Advanced Diploma in Software Development (ADSD) is an autonomous programme that has been specially designed based on IT industry requirements, professional feedback and dynamic research. To achieve the objectives of quality, practical and focused IT education, MET ISDR's ADSD programme ensures excellent IT career opportunities by turning all graduates into industry ready software developers. ADSD does not require any previous knowledge of programming. Especially for the non-engineering and the non-IT graduates who don't have any programming language in their formal curriculum. This programme requires candidates with good aptitude, analytical and logical skills, so that they can grasp the concepts of programming smoothly. Right from the Programming Languages & Operating Systems, ADSD will deliver the Enterprise Application Development using the latest platforms so that the students are equipped with all the tools and technologies which will help them in creating their own successful position in the community of knowledge professionals. Programme Objective This is a programme specially designed for all the graduates who want to make their career in the IT industry. Are you eligible? Successful completion of 10 + 2 + 3 or 4 or equivalent from a recognised University with minimum 50% at degree level. Computer Science or IT Diploma holders from the recognised technical boards with 2 years of relevant IT experience can apply. How can I apply? 1. Obtain Application Form and Prospectus, available at MET for Rs. 600/- in cash or DD payable at Mumbai in favour of 'MET ISDR'. You can also pay online (click here) and the same will be sent to you. 2. Fill the Application Form and submit the same with necessary documents (mentioned in the Prospectus). 3. Appear for the Selection Procedure on scheduled date. Important Dates 1. Last Date of Form Submission (Registration Closes) June 29, 2009 2. Entrance Exam and Selection Procedure July 05, 2009 Selection Procedure Based on the performance in the MET CET (consisting of Written Test & Personal Interview). Programme Modules The ADSD programme is divided into two parts. Each part consists of four modules. Each module is divided into two units. Following is the detailed structure: Part I - Systems Programming Part II - Application Programming Module 1: Programming Foundations Unit 1: Assembly and C Programming Unit 2: C++ Programming Module 5: Web Programming Unit 1: The Client Side Unit 2: The Server Side Module 2: Linux System Programming Unit 1: The Kernel Unit 2: The Shell Module 6: Java Programming Unit 1: Desktop Java Unit 2: Distributed Java Module 3: Windows System Programming Unit 1: WIN32 Platform SDK Unit 2: MFC and COM Module 7: .NET Programming Unit 1: Desktop .NET Unit 2: Distributed .NET Module 4: SE & Project Management Unit 1: Software Engineering Unit 2: Project Management Module 8: Aptitude Skills, Communications & Personality Development Unit 1: Aptitude Skills Unit 2: Communications & Personality Development Each unit spread over 3 weeks, comprises of 1. Theory - 48 hours with maximum of 3 hours daily 2. Practical - 72 hours with minimum of 4 hours daily Total = 36 weeks (9 months approximately) * Module 4 & Module 8 will require 15 days each (Total 1 Month) Total Duration: 10 Months + Project Programme Fee The fees for the entire programme is Rs. 1,08,000. Unique Features • Unique programme in line with the current requirement of the IT industry • State-of-the-art computer laboratory • Interaction with industry professionals on technical & non-technical topics • Practical hands-on sessions, extended lab sessions • Industry visits to IT companies • Educational loan assistance • Excellent placement assistance • Free-ships to meritorious and needy students Opportunites The Information Technology industry is the fastest growing sector significantly contributing to the Indian economy. The need of trained manpower, professional IT workforce is growing multifold. It is projected that the IT industry will need at least 6,00,000 trained software professionals by this year. And this number is likely to increase in the near future. ADSD's intensive programme structure is in-line with Industry needs and therefore, assures quality trained IT professionals ready to serve the industry. Candidates get wide range of opportunities in various sectors of IT Industry. They can make an entry as a Programmer, Software Engineer, Database Programmer, Web Programmer, System Analyst, Business Analyst, Software Tester or join in other departments like Maintenance, Support etc. Having acquired sound knowledge and skill sets, ADSD graduates can easily accept IT industry challenges, allowing them to succeed in short span of time. MET has a strong alumni base of over 4000 successful IT professionals worldwide with many of them at top positions in leading companies. Programme Outline The unique feature of the APSD programme is that it does not expect any previous knowledge of programming. This way it gives opportunity to all those graduates who have never learnt programming but want to make their career as an IT professional. With their domain knowledge, these professionals will doubtlessly play a key role in meeting the ever-growing demand for quality human resources. Right from the programming languages & operating systems, this programme will deliver the Enterprise Application Development using the latest platforms so that the students are equipped with all the tools and technologies which will help them in creating their own successful position in the community of knowledge professionals. Visit Following Site For More Information : MET ISDR

In-Depth look at the GridView Control

Introduction:
In this article we will examine more features of the Grid View control. In this article we will see some of the common operations that can be performed using the GridView control. Apart from these operations there are many more functions that can be performed on the control and which we will see in the later articles.

Adding a SqlDataSource and binding to GridView Control:
In this article I will be using the Northwind database which comes with SQL Server 2000. In the last article I explained how easy it is to bind the Grid View control to the SqlDataSource. You can perform all these actions using the wizard. If you want to code and bind the datasource you can easily perform it using the following code sample:

void Page_Load(object sender, EventArgs e)
{

if (!Page.IsPostBack)
{

// Binds the data

BindData();

}

}

public void BindData()
{

// you can use this line

string connectionString = myDataSource.ConnectionString;

// you can also use this line since by using the SqlDataSource it makes an entry in the
// web.config file if that is what choose to do
//string connectionString = (string)ConfigurationSettings.AppSettings["ConnectionString"];
// if you are using Enterprise Library you can also use
//string connectionString = (string)ConfigurationSettings.ConnectionStrings["ConnectionString"];

SqlConnection myConnection = new SqlConnection(connectionString);

SqlDataAdapter ad = new SqlDataAdapter("SELECT * FROM Categories", myConnection);

DataSet ds = new DataSet();

ad.Fill(ds, "Categories");

myGridView.DataSource = ds;

myGridView.DataBind();

}

You will need to set the Bound column in order to see the text in the cells of the grid view control. This can be easily done by using the Smart tag which appears when you right click on the grid view control.



I have also added a Status column to show you the checkbox column feature. The Status column is a simple bit field whose value can be either 1 or 0. If you are using Access database you can choose Yes/No Column. Once you have set up all your columns and execute the page it will display something like this:



At this moment if you try to select the Checkbox column, meaning if you try to check or uncheck the Status column it won't work. Let's see how we can make it work with our grid view control.

In the above image you see that the Checkboxes are not marked. The reason is because in the database the Checkbox column is NULL. If you make the column value to either 1 or 0 you will see check marks where the value is 1. See the image below and you will have a better idea of what I mean.



Editing in the Grid View Control
You can easily add the editing, updating, selecting, paging and sorting capabilities to your grid view control. Just add a new command column and you will be asked to add whatever functionality you desire.

If you are using the SqlDataSource to bind to the GridView control you will get most of the features by just using the SqlDataSource wizard. Since we are binding the control at runtime we need to add most of the functionality manually.

Edit Mode:
The fields that are marked readonly = false will change into TextBoxes when the Row_Editing event triggers. Like DataGrid control its easy to set the fields in the edit mode.

// Editing mode

void myGridView_RowEditing(object sender, GridViewEditEventArgs e)
{

myGridView.EditIndex = e.NewEditIndex;

BindData();

}

Cancel Edit:
If you don't like to edit the row you can press cancel link button which will fire the RowCancelingEdit event. The code to turn the row back to its original form is quite simple and straight forward.

// Cancel Edit Mode

void myGridView_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{

myGridView.EditIndex = -1;

BindData();

}

Selecting Row:
Selecting row event is fired when you make a click on the select link. If you need any particular item in that row you can easily select it using the cells property:

// Selecting row

void myGridView_SelectedIndexChanged(object sender, EventArgs e)
{

// This will contain the selectedValue of the row

string selectedCategory = myGridView.SelectedRow.Cells[1].Text;

}


The Cells start with index '0' which means Cell[0] is CategoryID , Cell[1] is CategoryName and so on.

Update Row:
For Updating the row we first need to get the value from the row that is entered by the user into the TextBox. For this purpose you can change the bound column into a Template column which will make is easier to locate the item.

After changing the CategoryName column to a tem plated column we can easily use the RowUpdating event to find the Text entered by the user.

void myGridView_RowUpdating(object sender, GridViewUpdateEventArgs e)
{

GridViewRow row = myGridView.Rows[e.RowIndex];

if (row != null)

{

TextBox t = row.FindControl("TextBox1") as TextBox;

if (t != null)

{

Response.Write("The Text Entered is" + t.Text);

}

}

Paging:
Paging can also be easily enabled in the grid view control. Its just like DataGrid from Asp.net 1.1. First you need to make set the allow paging property to true. And you can also set the page size. Here is a small code sample that will enable paging.

// Grid View Paging

void myGridView_PageIndexChanging(object sender, GridViewPageEventArgs e)
{

myGridView.PageIndex = e.NewPageIndex;

BindData();

}

Here is a small image shown below of paging. I have limited the page size to 3 so that the distribution of page will take place. In the image below we are in the page number 2.



Using SqlDataSource to execute commands:
You can also use the powerful SqlDataSource control to run and make your query. The SqlDataSource also contains the QUERY builder interface which can enhance the user experience in making SQL Queries. Apart from the SELECT query there are also INSERT, DELETE and UPDATE query builders wizards that you can use in your application.

When you use SqlDataSource you gets the advantage of having the paging, sorting implemented automatically which is pretty cool in some cases.

In the next article we will see some more features of the Grid View control. I hope you liked the article

Happy Programming !

Encryption and Decryption Functions

Microsoft provides very good classes for encryption and decryption under the following namespace.
System.Security.Cryptography.
Coding Sample Given as follows:

using System;
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;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;
using System.Security.Cryptography;

///

/// Class which contains static reusable methods for encrypting a string.
/// Mainly constructed for URL encryption but further can be used for string encryption
/// needed in other operation.
///

public class Cryptex
{
public Cryptex()
{
//
// TODO: Add constructor logic here
//
}

internal static HttpServerUtility sUtil = HttpContext.Current.Server;

///

/// Method used to encrypt a string making use of DES Algorithm.
///

///
///
///
public static string StringEncrypt_DES(string queryString) {

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
string key = ConfigurationManager.AppSettings["DESCryptokey"];

des.Key = Encoding.UTF8.GetBytes(key.Substring(0, 8));
des.IV = Encoding.UTF8.GetBytes(key.Substring(0, 8));
ICryptoTransform cryptotransform = des.CreateEncryptor();
try {
MemoryStream mStream = new MemoryStream();
CryptoStream cryptostream = new CryptoStream(mStream, cryptotransform, CryptoStreamMode.Write);
StreamWriter writer = new StreamWriter(cryptostream);

writer.WriteLine(queryString);
writer.Close();
cryptostream.Close();

byte[] buffer = mStream.ToArray();
mStream.Close();
return Convert.ToBase64String(buffer);
}
catch {
throw;
}
return string.Empty;
}

///

/// Method used to dencrypt a string making use of DES Algorithm.
///

///
///
///
public static string StringDecrypt_DES(string queryString) {

DESCryptoServiceProvider des = new DESCryptoServiceProvider();
string key = ConfigurationManager.AppSettings["DESCryptokey"];

des.Key = Encoding.UTF8.GetBytes(key.Substring(0, 8));
des.IV = Encoding.UTF8.GetBytes(key.Substring(0, 8));
try {
queryString = sUtil.UrlDecode(queryString);

byte[] buffer = Convert.FromBase64String(queryString.Trim());

MemoryStream mStream = new MemoryStream(buffer);
ICryptoTransform cryptotransform = des.CreateDecryptor();
CryptoStream cryptostream = new CryptoStream(mStream, cryptotransform, CryptoStreamMode.Read);

StreamReader reader = new StreamReader(cryptostream);

queryString = reader.ReadLine();
reader.Close();
cryptostream.Close();
mStream.Close();
}
catch {
throw;
}
return queryString;
}

///

/// Method used to encrypt a string making use of RC2 Algorithm.
///

///
///
///
public static string StringEncrypt_RC2(string inputString, string key) {

RC2CryptoServiceProvider rc2 = new RC2CryptoServiceProvider();
rc2.Mode = CipherMode.CBC;

rc2.Key = ASCIIEncoding.ASCII.GetBytes(key);
rc2.IV = ASCIIEncoding.ASCII.GetBytes(key);
ICryptoTransform cryptotransform = rc2.CreateEncryptor();
return encrypt(inputString, cryptotransform);
}
///

/// Method used to dencrypt a string making use of RC2 Algorithm.
///

///
///
///
public static string StringDecrypt_RC2(string inputString, string key) {

RC2CryptoServiceProvider rc2 = new RC2CryptoServiceProvider();
rc2.Mode = CipherMode.CBC;

rc2.Key = ASCIIEncoding.ASCII.GetBytes(key);
rc2.IV = ASCIIEncoding.ASCII.GetBytes(key);
ICryptoTransform cryptotransform = rc2.CreateDecryptor();
return decrypt(inputString, cryptotransform);
}
///

/// Method used to encrypt a string making use of Rijndael Algorithm.
///

///
///
///
public static string StringEncrypt_RIJNDAEL(string inputString, string key) {

Rijndael rijndael = new RijndaelManaged();
rijndael.Mode = CipherMode.CBC;
rijndael.Key = ASCIIEncoding.ASCII.GetBytes(key);
rijndael.IV = ASCIIEncoding.ASCII.GetBytes(key);
ICryptoTransform cryptotransform = rijndael.CreateEncryptor();
return encrypt(inputString, cryptotransform);
}

///

/// Method used to dencrypt a string making use of Rijndael Algorithm.
///

///
///
///
public static string StringDecrypt_RIJNDAEL(string inputString, string key) {

Rijndael rijndael = new RijndaelManaged();
rijndael.Mode = CipherMode.CBC;
rijndael.Key = ASCIIEncoding.ASCII.GetBytes(key);
rijndael.IV = ASCIIEncoding.ASCII.GetBytes(key);
ICryptoTransform cryptotransform = rijndael.CreateDecryptor();
return decrypt(inputString, cryptotransform);
}

protected static string encrypt(string Str, ICryptoTransform cryptotransform) {
try {
MemoryStream mStream = new MemoryStream();
CryptoStream cryptostream = new CryptoStream(mStream, cryptotransform, CryptoStreamMode.Write);
StreamWriter writer = new StreamWriter(cryptostream);

writer.WriteLine(Str.Trim());
writer.Close();
cryptostream.Close();

byte[] buffer = mStream.ToArray();
mStream.Close();
Str = sUtil.UrlEncode(Convert.ToBase64String(buffer));
}
catch{
throw;
}
return Str;
}

protected static string decrypt(string Str, ICryptoTransform cryptotransform) {
try {
Str = sUtil.UrlDecode(Str.Trim());
byte[] buffer = Convert.FromBase64String(Str);

MemoryStream mStream = new MemoryStream(buffer);
CryptoStream cryptostream = new CryptoStream(mStream, cryptotransform, CryptoStreamMode.Read);
StreamReader reader = new StreamReader(cryptostream);
Str = reader.ReadLine();
reader.Close();
cryptostream.Close();
mStream.Close();
}
catch {
throw;
}
return Str;
}

const string DESKey = "AQWSEDRF";
const string DESIV = "AQWSEDRF";

public static string DESDecrypt(string stringToDecrypt)//Decrypt the content
{
byte[] key;
byte[] IV;

byte[] inputByteArray;
try {
key = Convert2ByteArray(DESKey);
IV = Convert2ByteArray(DESIV);
int len = stringToDecrypt.Length; inputByteArray = Convert.FromBase64String(stringToDecrypt);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(key, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
Encoding encoding = Encoding.UTF8; return encoding.GetString(ms.ToArray());
}
catch (System.Exception ex) {
throw ex;
}
}

public static string DESEncrypt(string stringToEncrypt)// Encrypt the content
{
byte[] key;
byte[] IV;

byte[] inputByteArray;
try {
key = Convert2ByteArray(DESKey);
IV = Convert2ByteArray(DESIV);
inputByteArray = Encoding.UTF8.GetBytes(stringToEncrypt);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
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 (System.Exception ex) {
throw ex;
}
}

static byte[] Convert2ByteArray(string strInput) {

int intCounter; char[] arrChar;
arrChar = strInput.ToCharArray();
byte[] arrByte = new byte[arrChar.Length];
for (intCounter = 0; intCounter <= arrByte.Length - 1; intCounter++)
arrByte[intCounter] = Convert.ToByte(arrChar[intCounter]);
return arrByte;
}
}



For More Info Follow Following Link :

http://msdn.microsoft.com/en-us/library/system.security.cryptography.asnencodeddataenumerator.aspx