February 2002
Intermediate to advanced
960 pages
25h 37m
English
Content preview from Programming ASP .NETBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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ASP (Web Server) Controls
The third type of control is the ASP
control
, also known as the ASP
server control or the web server
control
. In this book,
we will refer to it as an ASP control, since the syntax used to
implement it is of the form:
<asp:controlType
id="ControlID"
runat="server" />where the control tag always begins with asp:. ASP
controls offer a more consistent programming model than the analogous
HTML server control. For example, in HTML, the input tag
(<input>) is used for buttons, single-line
text fields, checkboxes, hidden fields, and passwords. For multiline
text fields, you must use the <textarea>
tag. With ASP controls, each different type of functionality
corresponds to a specific control. For example, all text is entered
using the TextBox control; the number of lines is specified using a
property. In fact, for ASP controls in general, all the attributes
correspond to properties of the control.
The ASP controls also include additional, rich controls, such as the Calendar and AdRotator.
Example 4-5 and Example 4-6 demonstrate the use of ASP controls in a web page analogous to the HTML server controls of Example 4-1 and Example 4-2. They show the use of the TextBox and Button ASP controls, rather than of the HTML controls.
Example 4-5. Code listing for csASPServerControls1.aspx
<%@ Page Language="C#" %>
<html>
<script runat="server">
void btnBookName_Click(Object Source, EventArgs E)
{
lblBookName.Text = txtBookName.Text; } </script> <body> <form runat="server"> ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.