C# PostBackURL in Code behind?

.NET
1

Hi All,

I’m really new to ASP.Net C# and I’ve got a problem using PostBackURL

I have a shopping cart. The cart contents is database driven. When the user wants to click continue to purchase the items in the cart, I need to pass the cartID to the next page (order.aspx). However, I also need to recalculate the cart contents to ensure no quantities have been altered.

So I really need an onclick function to call the recalcCart function and then use PostBackURL (or equivalent). I can’t seem to find a way to do it.

I don’t want to use querystring or server.transfer (want to a move to the next page)

Any help would be greatly appreciated.

Regs,
ComfortablyNumb

PS this would have been easy in classic ASP!!! :rofl:

2

What if, you make of a class file and create your function in that class file. Aside from that, declare a parameter by reference of your control. And on the control’s click event, invoke the function that you made in order for you to recalculate the content of the cart.

3

one way of doing it would be putting them on a session variable. then you can access it from any page.

4

But what if the user has 2 pages open with 2 different carts? Sessions are nasty race conditions at times.

Personally, I would use a standard postback here and then just forward the user to the appropriate page assuming everything checks out.

5

i think create a parent class inherit with page classes. then simply recalculate and transfer link to next page

6

You can store them in a table and fetch in next page from DB.

7

you can use a query to take your variables to the next page if you don’t wanna use a session