.Net Overview

1
.Net Overview

• Data Driven Desktop and Web Applications using
  VB .Net and ASP .Net, C .Net or J .Net

2
History Future

• Move from ASP Scripting and COM components to
  proper event driven programming and Common
  Language Runtime
• VS .Net 2002, 2003
• VS .Net 2005 by June 2005 along with SQL Server
  2005 (tight coupling)
• Rich set of Mobile device drag drop controls
  for PDA and cell phones

3
VS .Net 2003 Editions

• VS .Net Enterprise Architect
• VS .Net Enterprise Developer
• VS .Net Professional
• VS .Net Academics
• http//msdn.microsoft.com/vstudio/productinfo/over
  view/default.aspx

4
Languages

• Choice of modern languages for desktop and web
  applications
• Desktop VB.Net
• Web ASP .Net, C .Net and J .Net
• Data Communication ADO .Net (ActiveX Data
  Objects)
• Whatever the language all compiled into one
  Common Language Runtime understood by the .Net
  Framework

5
Key Features

• Object Oriented and Event Driven Programming
  (simplified code encapsulation and reuse, e.g.
  authenticating users for all ltHRgt web
  applications)
• Web.Config file
• Store configuration settings in XML file format
• Contains application-wide data such as database
  connection strings, custom error messages, and
  culture settings.
• Not a scripting language
• Data types
• Functions
• Smart Intellisence (auto fill-in VS .Net 2005)
• Smart error handling with Try..Catch..Finally
• I.D.E. promotes R.A.D. and J.A.D.
• Drag, Drop Double-Click functionality
• Runtime debugging
• Separating HTML from Code
• Rich .Net controls (validation, data grid,
  PDA/cell phone controls)
• User controls (flexible/richer version of include
  files)
• Speed and ease of deployment (run an .exe file on
  the web server)

6
Code Peak
Automatically generated with double clicking a
control

• Event Driven Programming by Double Clicking
• Private Sub lnkPopulate_Click(ByVal sender As
  System.Object, ByVal e As System.EventArgs)
  Handles lnkPopulate.Click
• Insert Code Here
• End Sub
• Web .Config (e.g. Connection Key)
• ltappSettingsgt
• ltadd key"cnn" value"serverMONROEdatabaseSEMS3
  integrated securitySSPI" /gt
• lt/appSettingsgt
• XML file
• Dim strUrl as StringDim ds as New DataSetDim
  cstrStates As String http//localhost/xml/State
  s.xml
• strUrl cstrStates
• ds.ReadXml(strUrl)etc.

Handler
Control
Change values here and take effect everywhere
this key is used
Populate dropdown lists/search data Good for
data that does not change too often and can
live with nightly downloads
7
Web Form Example

• Simple web form
• Pulls data from SQL Server based on a stored
  procedure
• Uses XML data
• Validates Data before submitting (using drag
  drop validation controls that check data types,
  required fields, data ranges/comparisons etc.)

8
References

• Web Sites
• VS .Net http//msdn.microsoft.com/library/default
  .asp?url/library/en-us/vsintro7/html/vbconVisualS
  tudioSharedWalkthroughs.asp
• ASP .Nethttp//www.asp.net/Default.aspx?tabindex
  0tabid1
• ADO .Nethttp//www.w3schools.com/ado/default.asp
• Books
• Professional VB .Net by Wrox Press (1861004974)
• ASP .Net and ADO .Net by Dino Esposito
  (0-7356-1578-0)
• ASP .Net Data Web Controls by Scott Mitechell
  (0-672-32501-2)Please feel free to call me with
  any questions (I have tons of books you can
  borrow too) Disha Kibria (cell) 951-966-5706