Shopping Site - Grid View to choose item, store, go back and add more

[lightshift]

Hey all,

I am making a website for a project which allows the user to "purchase" items. Currently, I have all the items displayed in a grid view which has selection enabled.

When you click this, it stores the cell values into sessions which I retreive on another page as a label (my basket, if you will). What I would like to know is how to go further than just the 1 item, so I click my "Continue Shopping" button and it goes back to my shopping page where I can select another item which will again redirect to basket page and add it along side first item?

I have it working with 1 item at the moment, but when I go back and click another it overwrites the initial session.

Here is the code from my shopping page:

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
        {
            Session["CoffeeID"] = GridView1.SelectedRow.Cells[0].Text;
            Session["CoffeeName"] = GridView1.SelectedRow.Cells[1].Text;
            Session["CoffeePrice"] = GridView1.SelectedRow.Cells[2].Text;
            Session["CoffeeStrength"] = GridView1.SelectedRow.Cells[3].Text;
            Session["Origin"] = GridView1.SelectedRow.Cells[4].Text;
            Session.Timeout = 20;
            Response.Redirect("MoreDetails.aspx");
        }

And this from the basket page:

protected void Page_Load(object sender, EventArgs e)
        {
            lblID.Text = Session["CoffeeID"].ToString();
            lblName.Text = Session["CoffeeName"].ToString();
            lblPrice.Text = Session["CoffeePrice"].ToString();
            lblStr.Text = Session["CoffeeStrength"].ToString();
            lblOrigin.Text = Session["Origin"].ToString();
        }

[Erra93]

What you could do is have one session to store the amount of items in the basket and then have the item sessions numbered, possibly like this:
Session["CoffeeID" + number] = GridView1.SelectedRow.Cells[0].Text;
Session["CoffeeName" + number] = GridView1.SelectedRow.Cells[1].Text;
Session["CoffeePrice" + number] = GridView1.SelectedRow.Cells[2].Text;
Session["CoffeeStrength" + number] = GridView1.SelectedRow.Cells[3].Text;
Session["Origin" + number] = GridView1.SelectedRow.Cells[4].Text;

And then use a for-loop like this:

for(int i = 0; i < Session["items"]; i++)
{
//Do whatever
}

It's up to you :)

[lightshift]

Would that work for displaying the other item also?

What it currently does is output the data onto another form (moredetails.aspx), so if I was to hit the continue shopping button and choose a different item, the previous item will still be there and the new item will be next to it.

Then if I press the Checkout button, it will go to another page (say, checkout.aspx) which will carry over the "basket" items and have a label displaying the total price (item1 price * quantity)+(item2 price * quantity) for example.

[lightshift]

Or would it be easier to include a check box in my grid view and have a button that adds all ticked rows to a cart session, then another button that goes to checkout page?

[Erra93]

Would that work for displaying the other item also?

What it currently does is output the data onto another form (moredetails.aspx), so if I was to hit the continue shopping button and choose a different item, the previous item will still be there and the new item will be next to it.

Then if I press the Checkout button, it will go to another page (say, checkout.aspx) which will carry over the "basket" items and have a label displaying the total price (item1 price * quantity)+(item2 price * quantity) for example.

Yes, that would work, since it would store all the items in different sessions.