Session

Question

Introduction of session and types of session.

MuthuMari M · Answer

Hi A variable is stored temporary in the computer memory but sometimes we need to hold data across different pages. Here is when Session Variables come very helpful. They can retain their values as long as the user: Does not close the browser Does not leave the page inactive for a period longer than 20 minutes (unless specified otherwise) Does not end its own session (e.g. logout) To create a session variables: Session(VariableNameHere) = VariableValueHere To set a different session time out in minutes: Session.TimeOut = 40 To remove the session variable: Session.Contents.Remove(VariableNameHere) pls refer this url : http://www.c-sharpcorner.com/UploadFile/ganesh.nataraj/ASPdotNETSessionState09212005235624PM/ASPdotNETSessionState.aspx thanks If this post is useful then mark it as  Accepted Answer

Satyapriya Nayak · Answer

Hi Ankur Sessions can be used to store even complex data for the user just like cookies. Actually sessions will use cookies to store the data unless you explicitly tell it not to. Sessions can be used easily in ASP.NET with the Session object. We will re-use the cookie example and use sessions instead. Keep in mind though that sessions will expire after a certain amount of minutes as configured in the web.config file. Markup code: @ Page Language =  C#  AutoEventWireup =  true  CodeFile =  Default.aspx.cs  Inherits =  _Default  %> DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd > html xmlns =http://www.w3.org/1999/xhtml > head runat =server > title > Sessions title > head > body runat =server id =BodyTag > form id =form1 runat =server > asp:DropDownList runat =server id =ColorSelector autopostback =true onselectedindexchanged =ColorSelector_IndexChanged > asp:ListItem value =White selected =True > Select color... asp:ListItem > asp:ListItem value =Red > Red asp:ListItem > asp:ListItem value =Green > Green asp:ListItem > asp:ListItem value =Blue > Blue asp:ListItem > asp:DropDownList > form > body > html > And here is the CodeBehind: using System; using System.Data; using System.Web; public partial class _Default : System.Web.UI.Page { protected void Page_Load( object sender EventArgs e) { if (Session[  BackgroundColor  ] != null ) { ColorSelector.SelectedValue = Session[  BackgroundColor  ].ToString(); BodyTag.Style[  background-color  ] = ColorSelector.SelectedValue; } } protected void ColorSelector_IndexChanged( object sender EventArgs e) { BodyTag.Style[  background-color  ] = ColorSelector.SelectedValue; Session[  BackgroundColor  ] = ColorSelector.SelectedValue; } } Session Management can be achieved in two ways 1)InProc 2)OutProc Normal 0 An inproc is one which runs in the same process area as that of the client giving the advantage of speed but the disadvantage of stability because if it crashes it takes the client application also with it. Outproc is one which works outside the client's memory thus giving stability to the client but we have to compromise a bit on speed. Also Please refer Our recommended articles Thanks