>>It sounds as if the new page is a generic page that just displays the information in the DS? If that's the case then I can't think of a way other than the one currently being used......
>
>There should be a way to fire some code when the buttons clicked even if it's Client-side click only. I do want to avoid a postback, though.
>
>Here is the same question discussed
>http://forums.asp.net/p/1312838/2589448.aspx#2589448

The suggestion to use XML to store the dataset rather than using session variables would ease the server. I fail to see how the suggestion to use AJAX would help - since you are opening a new ASPX page the code may as well be there anyway.

IAC for the new page to use the dataset there are only two options: either the dataset must be available or the information to create it must be. Instead of storing the dataset itself could you just store the SQL used to create it ?
Regards,
Viv