passing gridview particular row datas to another page in asp.net? - asp.net

Question

i want to set session in login page and want to pass one page girdview data to another page.
slno title author publication takenby
1 book1 author1 pub1 sendrequest (button)
Above image showing gridview. when i click the Request Book button(1st one). it will redirect to sendrequest.aspx page. and have to bring that row data (i.e)
slno=1
title=book1
Author=author1
publication=publ
i tried below code
user.aspx.cs
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
string user = (string)(Session["User"]);
if (e.CommandName.Equals("SendRequestCmd"))
{
if (user == null)
{
Session["slno"] = null;
Session["bookname"] = null;
var clickedRow = ((Button)e.CommandSource).NamingContainer as GridViewRow;
// now access the cells like this
SlNo = clickedRow.Cells[0].Text;
Session["slno"] = SlNo.ToString();
BookName = clickedRow.Cells[1].Text;
Session["bookname"] = BookName.ToString();
}
}
}
sendquest.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
string slno = "", bookname = "";
slno = (string)(Session["slno"]);
bookname = (string)(Session["bookname"]);
if (slno == null || bookname == null)
{
Response.Write("serial no: " + slno + "\nbookname: " + bookname);
}
}
protected void Logout()
{
Session.Clear();
}
but i got error in
slno=(string)(Session["slno"]);
bookname=(string)(Session["bookname"]);
why? anybody correct it?
else say better way?

Answer 1

Without posting your error it's difficult to see what the problem is. You could check that Sessions are enabled in your application.
Another way to do this (which may be better) is passing just the id/slno (via QueryString) to your other page, then perform a lookup to get your data at that stage.

Answer 2

I will surely create a type(Class) for booking
with slno title author publication properties and
public class Booking
{
public Booking()
{
//
// TODO: Add constructor logic here
//
}
public int slno { get; set; }
public string Title { get; set; }
public string author { get; set; }
public string publication { get; set; }
}
set all properties of object of booking type and pass that object in session
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
string user = (string)(Session["User"]);
if (e.CommandName.Equals("SendRequestCmd"))
{
if (user == null)
{
Booking b = new Booking();
b.slno = clickedRow.Cells[0].Text;
b.Title = BookName.ToString();
Session["Booing"] = b;
}
}
}
and on receiving end just case that session value into that object again
and access each property just by using dot with object name .
Booking b=(Booking)Session["Booking"]
int slno=b.slno;
string Title=b.Title;
Without posting error not possible to give suggestion or correction , my answer is just how can you pass multiple values using session from one page to another .
Thanks