asp.net

asp.net is a part of microsoft .net technologies and is used to create interactive and dynamic web pages.
It is basically a next generation of asp but not an upgraded version of asp. It is not fully backward compatible with asp.

Like ASP, ASP.net is a server side scripting technology that enables scripts embedded in html pages to be executed by an internet sever.

extension of asp.net file is .aspx

advantages over asp

• reduced amt of code
• easier and quicker programming
• increased performance by running compiled code
• user authentication
• event driven programming
• it doesnt support VBScript
• asp doesnt maintain viewstate

%Response.Write(now())%

Server Controls ----these are tags understood by server

problem in classic ASP---spaghetti code problem.............u cant separate executable code from html

but server controls in ASP.NET has solved dis pblm. There are 3 kinds of server controls

1. html
2. web
3. validation

• runat="server" attribute is added to html ctrls
• syntax for creating web server controls::::::::::asp:control_name id="some_id" runat="server"
• syntax of writing an event Sub function_name(Source as object, e as Event Args) body End Sub
• asp:RangeValidatorControl ToValidate="tbox1" MinimumValue="1" MaximumValue="100" Type="Integer" Text="The value must be from 1 to 100!" runat="server" /
• Page.IsPostBack property it is false when page is loaded for the first time
• ViewState is automatically maintained in asp.net, if u wana disable it then write %@ Page EnableViewState="false" % directive