Building Effective Web Applications with ASP .Net 3.5

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5 Νοε 2013 (πριν από 4 χρόνια και 4 μέρες)

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Building Effective Web
Applications with ASP .Net 3.5

Noah Subrin

SRA University

Fall 2008

Week 1


Course Schedule and Format


Schedule


Every Thursday 08:30 to 10:30


October 23 through December 4


No class the week of November 24
-
28


Course Format


Presentations, Demos, Code
Walkthroughs, White Papers, Course
Text, Virtual Labs





Target Audience


Prior web development experience


Best geared towards programmers,
software engineers, web designers,
technical leads, task leads and
architects.


Class will be taught using C# which
has a similar syntax to Java


Instructor Introduction


Technical Lead (IRS JOC
-
ETD
project)


MCSD and MCSD .Net


Represent SRA at developer
community events in the Southeast


Author of five prior SRA
-
U courses


Contact info:


noah_subrin@sra.com

Course Objectives


Become familiar with new features
in ASP .Net 3.5


Build database driven apps using
LINQ


Leverage ASP .Net AJAX on both the
client and server side


Learn about state management and
caching


Secure your ASP .Net websites


Create an end to end web app

Course Roadmap


Week 1


Getting Started


Week 2


Data Access, ADO .Net and
LINQ


Week 3


AJAX


Week 4


State Management and
Caching


Week 5


Security


Week 6


End to End app and SP1

Course Text and Code Samples


ASP .Net 3.5 Unleashed ( author
Stephen Walther
-

Sam’s
Publishing)


Code samples available for download at


www.superexpert.com

o
CD that accompanies the book has
both C# and VB .Net versions of the
code

o
Chapter 1 is available as a free
download from
www.bookpool.com

o
Demo how to run book code



Today’s Agenda


Getting Started


Tools We Will Use


ASP .Net 3.5 Overview


Project Setup/Configuration


WebForms Overview


Server Controls


User Controls


Master Pages


Debugging and Tracing


New Features in ASP .Net 3.5

ASP .Net 3.5 Overview


ASP .Net 3.5 is a technology that
allows programmers to create dynamic
web sites.


ASP .Net can be used to create small
personal web sites or Enterprise
applications


ASP .Net is part of the .Net
Framework


.Net Framework consists of the
Framework Class Library and the
Common Language Runtime

Tools We Will Use


VS 2008 Professional or


Visual Web Developer 2008


SQL Server Express Edition or higher
(2005 or 2008)


Express Edition or higher


Links to download these products can
be found on
http://msdn.microsoft.com


VS2008 available from MS, MSDN or
Team System subscription or contact
Bill Scherer Jr

(SRA Enterprise
Solutions Tech Director)



Working with .Net Projects


VS2003


VS2003: Single solution file. Project precompiled
into a single DLL, ASPX markup pages deployed.


Pros:


Compiles/debugs like other projects (WinForms,
etc.)


Slightly more efficient.


Single file deployment + referenced DLLs +
HTML.


Cons:


Not easy to use in team environments.


Often leads to monolithic DLLs for large sites.



Working with Projects
-

VS2005

VS2005: Website Compilation Model


All files
compiled on demand.

Pros:

Works better in teams.

Easy to deploy/test incremental updates.

Cons:

Can be difficult to upgrade from VS2003.

First hit incurs compilation overhead.

May mean more files to deploy.

Working with Projects
-

VS2008


VS2008: Both models supported
out of the box.



File
-
> New
-
> Web Site

Old style

New style

New style

New style

File
-
> New
-
> Project

-
> ASP.NET Web App

File
-
> New
-
> Web Site

Demo


Create a new website using ASP
.Net 3.5 and VS2008


Web Forms Key Points


ASPX pages handled by a handler that
facilitate the page lifecycle and events
(such as Page_Load, PreRender, and
control events).


Uses ViewState to encoded state
-
specific
information otherwise lost in the stateless
nature of HTTP.


Extensive controls library to abstract
functionality. Buttons, textboxes, etc.


Extensible.


Web Forms have a .aspx file extension.


Server Controls


Typically compiled into a DLL.


Represents a small piece of
functionality, like a textbox or
button.


Responsible for handling any special
rendering requirements, raising
events, etc.


Properties

Event Handlers

User Controls


Collections of HTML and/or Server
Controls for a broader purpose


such as a login dialog box.


Typically part of a project and
compiled with the project.


Can expose properties.


HTML Controls


Take any HTML tag and add a
runat=“server” tag.


This converts the HTML tag into a
server
-
side ASP .Net control


Allow us to program server side
events

Master Pages


Same look and feel to many pages;
code in one spot.



Break


We will look at some other Demos
after break

ViewState (p29)


The HTTP Protocol is a stateless
protocol


Web Pages use a
Request/Response model


ViewState allows us to save the
state of a server control across
multiple page requests


Comes with performance overhead


Enabled by default for each control


Demo


Add page level tracing to existing
page


Examine page lifecycle


Examine Viewstate cost


Write to trace log


We can determine if the page is
posting back by using the
Page.IsPostback property


We can turn tracing and debugging
on at the page or app level



Dynamic Compilation (p35)


When we create an ASP .Net page
we are creating source code for a
.Net class


Pages are compiled and stored in a
temp folder on the web server


Unlike classic ASP the page will not
be recompiled again, unless we
disable dynamic compilation


This allows support for thousands of
simultaneous users

Code Behind vs Single File Pages


In a single file ASP .Net page, a
single file contains both the page
code and page controls


A code behind has the page code in
a separate file


Which should you use? (p45)

New Features of VS2008


Javascript Intellisense/Debugging
support


Nested Master Pages


Enhanced CSS Management


Multi
-
targeting support.


New data controls.


MUCH improved designer.


Other ASP .Net Resources


MSDN Web site


Sra.skillport.com


MSDN Virtual Labs


MS Tech
-
ED Developer
presentations on my SRA portal site


VS 2008 Training Kit


http://www.asp.net/downloads/


http://www.codeplex.com/aspnet


Optional Take Home Class Exercise


MSDN Virtual Lab “Building web
Applications with Visual Studio
2008”


Event ID: 1032360368


(msevents.microsoft.com)


This lab is included in the VS2008
Training Kit mentioned on previous
slide so this can be done offline on
your pc workstation


Next Week


Q&A


Week 1 Review


Homework Review (Take home lab)


Chapters 16
-
18 (Data Access, ADO
.Net, and LINQ to SQL)



Questions ?


Feel free to contact me at
noah_subrin@sra.com


Please use the class portal site on
the SRA portal to post question or
other discussions that may be of
interest to the class.


Thank you!