Transcript .Net Overview - Webmasters' Support Group: Home

.Net Overview
Data Driven Desktop and Web
Applications using
VB .Net and ASP .Net, C# .Net or J# .Net
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
VS .Net 2003 Editions
•
•
•
•
VS .Net Enterprise Architect
VS .Net Enterprise Developer
VS .Net Professional
VS .Net Academics
http://msdn.microsoft.com/vstudio/productinfo/overview/default.aspx
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
Key Features
•
•
•
Object Oriented and Event Driven Programming (simplified code encapsulation and
reuse, e.g. authenticating users for all <HR> 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
–
–
–
–
•
I.D.E. promotes R.A.D. and J.A.D.
–
–
–
–
–
•
Data types
Functions
Smart Intellisence (auto fill-in VS .Net 2005)
Smart error handling with Try..Catch..Finally
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)
Code Peak
•
Automatically generated with double
clicking a control
Event Driven Programming by Double Clicking
Handler
Control
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)
Change values here and take effect
everywhere this key is used
<appSettings>
<add key="cnn" value="server=MONROE;database=SEMS3; integrated security=SSPI" />
</appSettings>
•
XML file
Populate dropdown lists/search data:
Good for data that does not change too often
and can “live” with nightly downloads
Dim strUrl as String
Dim ds as New DataSet
Dim cstrStates As String = “http://localhost/xml/States.xml”
strUrl = cstrStates
ds.ReadXml(strUrl)
etc.
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.)
References
Web Sites
• VS .Net
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vsintro7/html/vbconVisualStudioSharedWalkthroughs.asp
• ASP .Net
http://www.asp.net/Default.aspx?tabindex=0&tabid=1
• ADO .Net
http://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