Store many Values In single variable and session that variable to next page and convert into string

Question

0.00/5 (No votes)

See more:

This Is my Gridview
http://i59.tinypic.com/2l94i1k.jpg
when user click add to cart button corresponding product id will got from using
http://i58.tinypic.com/2cymrt4.jpg

link Button Event Code

http://i62.tinypic.com/212d6e0.jpg

My problem is when user click addtocart for multiple products,
how to store values in variable one by one ,example like(9,11,15) and session that total clicked productid to next page,and convert back to string format ,because my sql query like this (select * from products where product='9'AND'14'And'16')
please help me

protected void LinkButton1_Click(object sender, EventArgs e)
{

GridViewRow gr = ((sender as LinkButton).NamingContainer as GridViewRow);
List<string> myList = new List<string>();

myList.Add(gr.Cells[0].Text.Trim());
string s = string.Join(",", myList.ToArray());
Session["ss"] = s;

}

other page
String h = Session["ss"].ToString();
Response.Write(h)
but itshow only last item cliked

Posted 1-Mar-14 0:20am

ganeshram1991

Updated 1-Mar-14 2:07am

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2014-03-01T00:31:00

That SQL query won't work anyway:

SQL

product='9' AND '14' AND '16'

Is not a valid boolean expression (ignoring that it logically can't be true under any circumstances even if your corrected it)

So what you want to use is

SQL

SELECT * FROM products WHERE product IN (9, 14, 16)

Assuming you have stored numbers in your table not strings.
So...can you convert a list to a string, with commas? Yes:

C#

List<int> myList = new List<int>();
...
string s = string.Join(",", myList.Select(i => i.ToString()));

Or, you could store the Session variable as a string:

C#

Session["MyList"] = (string) Session["MyList"] + "," + product;

[edit]
In fact, you don't need the Select:

C#

List<int> myList = new List<int>();
...
string s = string.Join(",", myList);

Will do exactly the same thing... :doh:
[/edit]