ASP_NET Features

Asp .Net 2.0 New Features By Biswadip Goswami (c) Biswadip Goswami, [email_address]

What's New in 2.0

(c) Biswadip Goswami, [email_address]

ASP.NET pages are text files with an .aspx file name extension. Pages consist of code and markup and are dynamically compiled and executed on the server to produce a rendering to the requesting client browser (or device).

The Html part of ASP. NET

<html> <head> <link rel="stylesheet" href="intro.css"> </head> <body> <center> <form action="intro1_cs.aspx" method="post"> <h3> Name: <input id="Name" type=text> Category: <select id="Category" size=1> <option>psychology</option> <option>business</option> <option>popular_comp</option> </select> <input type=submit value="Lookup"> </h3> </form> </center> </body> </html>

Code behind

<%@ Page Language="C#"%> <html> <head> <link rel="stylesheet"href="intro.css"> </head> <body> <center> <form action="intro2_cs.aspx" method="post"> <h3> Name: <input id="Name" type=text> Category: <select id="Category" size=1> <option>psychology</option> <option>business</option> <option>popular_comp</option> </select> </h3> <input type=submit value="Lookup"> <p> <% for (int i=0; i <8; i++) { %> <font size="<%=i%>"> Welcome to ASP.NET </font> <br> <% }%> </form> </center> </body> </html>

Print on button click

<%@ Page Language="C#" %> <html> <head> <link rel="stylesheet"href="intro.css"> </head> <body> <center> <form action="intro3_cs.aspx"> <h3> Name: <input name="Name" type=text value="<%=HttpUtility.HtmlEncode(Request.QueryString["Name"])%>"> Category: <select name="Category" size=1> <% String [] values = { "psychology", "business", "popular_comp" }; for (int i=0; i<values.Length; i++) { %> <option <% if (Request.QueryString["Category"] == values[i]) { Response.Write("selected"); } %>> <%=values[i]%> </option> <% } %> </select> </h3> <input type=submit name="Lookup" value="Lookup"> <p> <% if (Request.QueryString["Lookup"] != null) { %> Hi <%=HttpUtility.HtmlEncode(Request.QueryString["Name"]) %>, you selected: <%=HttpUtility.HtmlEncode(Request.QueryString["Category"]) %> <% } %> </form> </center> </body>

Namespace

In general, a namespace is an abstract container providing context for the items (names, or technical terms, or words) it holds and allowing disambiguation of items having the same name (residing in different namespaces).

As a rule, names in a namespace cannot have more than one meaning, that is, two or more things cannot share the same name. A namespace is also called a context, as the valid meaning of a name can change depending on what namespace applies. Names in it can represent objects as well as concept, whether it is a natural or ethnic language, a constructed language, the technical terminology of a profession, a dialect, a sociolect, or an artificial language (e.g., a programming language).

Thank You !