Overview Of Session In ASP.NET

Introduction

Session is a state management technique. A session can store the value on the server. The session object is used to store and retrieve specific values within a web page and it stores and retrieves the value of the particular time session. Session is one of the best techniques of State Management because it stores some information or data and is used to pass it from one page to another. I have written this article focusing on students and beginners.

Flow Chart

Fig: 1

Session Timeout

Session's default timeout is 20 minutes.
We can set the session timeout manually in web.config or programmatically.

Session Timeout in programmatically

Session.Timeout = 10;

Session Timeout in web.config

<configuration>
<system.web>
<sessionState timeout="30"></sessionState>
</system.web>
</configuration>

How to create a Session

Step 1

Right-click on Solution Explorer then “Add”, select “Web Form”.
Create a webform page named as login (or choose the name you wish).
Create an event and write the following code at Login.aspx.cs.

Coding

protected void btnLogin_Click(object sender, EventArgs e)
{
Session["UserName"] = txtEmail.Text;
Session["PassWord"] = txtPassword.Text;
Response.Redirect("User.aspx");
}

Output

Step 2

Create another webform page named as User (or choose the name you wish).
Write the following code at User.aspx.cs.

Coding

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Session["UserName"] != null)
{
lblUser.Text = "Welcome to" + " " + Session["UserName"].ToString();
}
}
}

Output

Session Mode

Fig: 2

InProc

This is default session state mode.
Sessions are stored inside of the application's process on the webserver.
1. <configuration>
2. <system.web>
3. <sessionState mode="InProc"></sessionState>
4. </system.web>
5. </configuration>

OutProc

Session data are stored in different memory locations.

SQL Server.
State Server.

SQL Server

Session data are stored in different Servers.
SQL Server database is used to store session data and SQL Server connects with ConnectionString.
Write the following code at web.config.
1. <configuration>
2. <system.web>
3. <sessionState mode="SQLServer" sqlConnectionString="ConnectionString"></sessionState>
4. </system.web>
5. </configuration>

State Server

Session data are stored in different servers.
Sessions are stored using State Server windows service.
Write the following code at web.config
1. <configuration>
2. <system.web>
3. <sessionState mode="StateServer" stateConnectionString="ConnectionString"></sessionState>
4. </system.web>
5. </configuration>

Advantages

It is easy to implement and accessing data is very fast.
Session is secure and transparent from the user.
Sessions are very simple to use.

Summary

In this article, I discussed sessions in ASP.NET. I have written this article focusing on beginners and students.

6 Comments

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Deepan7y ago
Good article
- Mageshwaran R7y ago
  Thank You Deepan
Abdalla Elawad7y ago
Thank you so much to publish this important article
- Mageshwaran R7y ago
  Thank you Abdalla Elawad
Pankajkumar Patel7y ago
Nice article
- Mageshwaran R7y ago
  Thank you pankaj patel