Caching records per user without session

[enofelli]

I spend more time, but became unlucky. I am loading an usercontrol asynchronously from a class library. And that classlibrary will return an object to the asp.net page. Here i want to cache some datas and pass it to the usercontrol. Page-> call class library -> load usercontrol asynchronosly I am calling the class library in page_load method.I have a textbox + button in Page. When i click the button i just want to pass the textbox's value to classlibrary. Unfortunately the textbox+button also dynamically generated in page_load method. So it gives empty when i get the textbox value. I can't use oninit method here. So i decided to call a webservice in javascript and cache the textbox's value and access it in class library. unfortunately it is accssible by all the users. I can't use session here. I am doing on SharePoint. And I mentioned WebPart as Page in my description. SO i can't modify anything hereAny way for this scenario?