What web framework uses "javascript:__doPostBack()"

I've seen this al开发者_JS百科l over the web

javascript:__doPostBack('ctl00$ContentPlaceHolder1$lnk2','')

Checking headers of the last place I saw it didn't reveal a server side language.

What server side language and/or framework encourages this style of link?

ASP.NET server controls that post to the current page generate those kind of links.

Microsoft's ASP.NET

Microsoft's Asp.net Web forms frameworks uses this type of convention to make post back to page.