is it possible to use XMLHTTP request to bind asp.net server controls

i only found websites that uses the XMLHTTP request to call an aspx page or what ever page ( make a request to a page that appears the piece of data in a div or so )

but i have a question

is it possible to use it to bind asp.net server controls

Examples 1- bind a gridview or datalist from this XMLHTTP request 2- after click an edit button in a grid can i use XMLHTTP request to fill some text boxes and dropdowns and other asp.net server controls 3- can i use upload files using XMLHTTP request

i want to know if this is possible or not because Ajax and update panels are very slow and affect the server and client performance

is there another alternative if my senarios are imposible with XMLHTTP request where can i learn about this alternative

if this possible where can i learn more about this XMLHTTP request with asp.net server side controls instead of ajax an开发者_Python百科d updatepanel

You should consider scrapping the ASP.NET server-side approach with XHR type implementation, and focus on the rendering on the client, if you are looking for pure AJAX performance. This is the best and most peformant way, but requires more coding. .NET 4 has a lot of nice improvements, and IMHO, JQuery is a must.