CS143: Programming in C++

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Transcript CS143: Programming in C++ 

CS 3870/CS 5870
Static and Dynamic Web Pages
ASP.NET and IIS
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Static Web Pages
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Original HTML documents
Remaining the same after created and modified
At all times and to all users
All three pages of Prog1 are static
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Static Web Pages
• Cannot be used for business operations
• No user input
• Cannot respond to different user requests
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Dynamic Web Pages
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Interactive or Smart HTML pages
User input and Server Response
Web Applications
Similar to Windows programs
Prog2
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Special HTML Controls
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To get user input
Element INPUT
Element BUTTON
Element FORM
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Control Types Created with INPUT
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Text
Password
Checkbox
Radio box
Submit
Reset
Hidden
Button
File
Image
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HTML Forms
Controls to get user input should be inside
HTML forms
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HTML Controls and Forms
Example
View Source Code
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HTML Standards
HTML 4.01 Specification
HTML5
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Scripts for Dynamic Web Pages
• User Input and Server Response
• Similar to Windows programs
• Need code to respond to user input
– Client Side Scripting
– Server Side Scripting
– Combination of above two approaches
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Client Side Scripting
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HTML files and instruction files sent to client
Client Script
JavaScript
VBScript
Java Applets
Flash
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Issues with Client Side Scripting
• Different browsers may interpret
instructions in different ways
• Database is normally at server site
• Users could view source code
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Server Side Scripting
• Instruction files are at server site
• HTML files are generated according to user input
• Only HTML files are sent to clients
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Issues with Server Side Scripting
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Most computing is done at the server
Nothing will work when the server is down
More internet traffic
Powerful and expensive servers
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Different Technologies for
Server Side Scripting
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CGI (Common Gateway Interface)
JSP (Java Server Pages)
PHP (Personal Home Pages)
ASP (Active Server Pages)
ASP.NET
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ASP.NET
• A server-side technology for creating
dynamic web pages
• Client-side scripting is incorporated
(e.g., to check input)
• VB.NET or any other language
supported by .NET
• Working with MS IIS
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Internet Information Services (IIS)
• IIS waits and takes client requests
• IIS sends static HTML files to the clients
• IIS passes client requests to ASP.NET when
needed
• ASP.NET generates dynamic web pages
• IIS sends dynamic web pages to clients
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Program 2
• 20 points
• Due 5 pm, Wednesday, September 16
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Creating Folder
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Solution Explore
Right Click on Web Site
New Folder
Prog2
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Creating Web Forms
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Solution Explorer
Right clicking folder
Add
Web Forms
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Page Default.aspx
Similar to index.html
Static page for Prog2
Similar to pages of Prog1
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Adding Content to Default.aspx
• Similar to Prog1
• Copy and Paste, including the CSS file
<body>
<form id="form1" runat="server">
<h1 class="CS3870Title">Web Protocols, Technologies
and Applications </h1>
<h2 class="CS3870Name">Qi Yang</h2>
<%-- navigation bar --%>
</form>
</body>
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External CSS Files
in Other Locations
<head>
<link rel="stylesheet" type="text/css" href=“../StyleSheet.css" />
<title>CS3870/CS5870 – Prog2</title>
</head>
<body>
<ul class="navbar">
<li> <a href="http://www.uwplatt.edu/csse/">Absolute link </a></li>
<li> <a href=“HtmlPage2.html"/>Relative link</a></li>
</ul>
</body>
</html>
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Page OrderingProduct.aspx
Dynamic page
Adding controls
Adding code
VB
C#
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Creating Page OrderingProduct.aspx
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Solution Explorer
Right clicking folder
Add
Add New Items
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Visual basic
Web Form
File name
Place code in separate file
(Select Master Page)
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ASP.NET Server Controls
• HTML Server Controls
– HTML server controls are HTML tags understood by the
server
• Web Server Controls
– Web server controls are special ASP.NET tags understood
by the server.
– Web server controls do not necessarily map to any existing
HTML elements and they may represent more complex
elements.
• All Server Controls must be within a <form> tag.
• All Server Controls must have the runat="server"
attribute.
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Adding and Formatting Controls
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ToolBox
Standard (not HTML)
Setting control properties
Style
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Source View
Format Menu
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Set Position
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Absolute
Relative
CSS file
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Event Procedures
Same as Windows programs
Compute Square Root
TextBox2.Text = FormatNumber(Math.Sqrt(Textbox2.Text), 2)
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Formatting Output
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Style in HTML source
Properties Window
VB.NET procedures in VB file
VB function
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Format
FormatCurrency
FormatDateTime
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Checking Input
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Click event of button Compute
Server site scripting
Client site scripting should be better
Should do it on both sites
Control Validator
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Validators
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ToolBox
Validation Tab
ControlToValidate
RequiredFieldValidator
RangeValidator
CompareValidator
– Type
– Operator
– Value to compare
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Validation Controls
• Validate input automatically
• We don’t check input in event procedures any more
• Must set button property CausesValidation to True!
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Program 2
You will lose five points for each late day!
Even the server is having issues!
More to discuss next class!
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