by Raghuraja. C (21 Submissions)
Category: Miscellaneous
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Thu 19th June 2003
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Basic Concept of Dot Net
VBcoders
----
1.Session Prerequisites
This session assumes that you understand the fundamentals of
Distributed Web application development
ASP
ADO
COM
This is a Level 200 Session
2.What Will Be Covered Today
The .NET Framework
Common Language Runtime
ASP.NET, Web Forms, and Web Services
ADO.NET
XML Support
3.Agenda
Introduction to .NET
The .NET Framework
Common Language Runtime
Building User Interfaces
Data and ADO.NET
Summary
4.Introduction to .NET First Generation
Introduction to .NET
5. First Generation:
|--------------|
Browsers <--- Internet --->| Client Logic |<-----> Servers Data, Hosts
| Biz Logic |
| OS Services |
|--------------|
OS Services: Applications largely operating in a client/server
modal were augmented with web browser and servers.
The industry focused on rich OS and local
services provided by products like SQL Server.
Internet: Web app developers took advantage of these local
services and used HTML to "Project" the UI many
types of clients.
Microsoft provided COM, IIS, IE
6.Second Generation:
Rich Client Logic --->
|----------------|
Browsers <--- Internet ---> | Biz Tier Logic | <---> Servers Data, Hosts
| | |
| OS Services | <---> Stateful
|----------------| <---> Stateless and Geo-Scalable
Browsers/Biz Tier Logic: COM+ Services improve reliablity scalability and manageablity.
IE provides D/HTML for better interactivity.
Combination of "Stateless" Web protocols with DNS and IP routing have enabled
mass-scale "Geo-Scalability"
OS Services: Separation of data and business logic provide greater scalablity while
accessing enterprise and legacy data
7. Web Services: The Next Generation
Applications Become
Programmable Web Services
|---------------------------|
| |
Other Services <--- XML --> | Biz Logic & Web Services | <-- XML --> Public Web Services
|---------------------------|
Smarter Client <--- XML --> | | <-- XML --> Building Block Services
| OS Services |
Standard Brower<--- XML --> | | <-- XML --> Internal Services
| |
Smarter Devices<--- XML --> | | <-- XML --> Servers Data, Hosts
|---------------------------|
Richer, More Productive Open Internet Application Leverage Globally-Available
User Experience Communications Protocols Federated Web Services
(HTTP, SMTP, XML, SOAP)
8. The .NET Platform
|----------------------|
Visual Studio.NET <---->| Your Application and | <----> Your Internal Services
| Web Services |
|----------------------| <----> .NET Enterprise Servers
| |
| Orchestration | <----> .NET Foundation Services
Application |----------------------|
Using Your <----------->| .NET Operations|
Service | Frame Work | <----> Third Party Web Services
|----------------------|
| |
| Windows CE, ME, 2000 |
| .NET |
|----------------------|
Internet Protocols
End-user Clients <----> SOAP "blue book" HTTP,
SMTP, XML
9.Agenda
Introduction to .NET
The .NET Framework
Common Language Runtime
Building User Interfaces
Data and ADO.NET
Summary
10. The .NET FrameworkWhat Is the .NET Framework?
A set of technologies that
Unite today’s isolated Web applications
Make information available anytime, anywhere
Simplify development and deployment
How does .NET achieve the above?
Web Services
ADO.NET Datasets and XML support throughout the platform
Rich tools, runtime services and XCOPY Deployment
11. The .NET FrameworkWeb Services
The center of the .NET architecture
Technical definition
“A programmable application component accessible via standard Web protocols”
Expose functionality from Web Sites
Almost like component programming over the Web
12. The .NET FrameworkWeb Services
| <-- XML--> Web Service <--XML-> Web Service
|
Cleint | <--HTML--> Web Service <--XML-> Web Service
|
| <-- XML--> Client
13. The .NET FrameworkThe .NET Framework and Visual Studio.NET
VB c++ C# JSCript
|
VS.NET | Common Language speicfication
|
VS.NET | ASP.NET: Web Services and Web Fors | Windows Forms
|
VS.NET | ADO.NET: Data and XML
|
VS.NET | Base Class Library
|
VS.NET | Common Language Runtime
|
14. The .NET FrameworkCommon Language Runtime
Simplified Development
XCOPY Deployment
Scalability
Rich Web Clients and Safe Web Hosting
Potentially Multi-Platform
Multiple Languages (Cross Inheritance)
Increases Productivity
15. The .NET Framework.NET Framework Services
ASP.NET
Logical evolution of ASP (compiled)
Web forms
Manageable code (non spaghetti)
Windows® forms
Framework for building rich clients
ADO.NET, evolution of ADO
New objects (e.g., DataSets)
XML Support Throughout
16. Agenda
Introduction to .NET
The .NET Framework
Common Language Runtime
Building User Interfaces
Data and ADO.NET
Summary
17. Common Language RuntimeArchitecture
FrameWorks
|--------------------------------------|
| Common Language Runtime |
| |
| Base Classes |
| |
| IL to Native Execution Security |
| Complier Support |
| |
| GC, Stack walk, Code manager |
| |
| Class loader and layout |
|--------------------------------------|
18. Common Language RuntimeGoals
Development
Standard class framework
Automatic memory management
Consistent error handling
Mixed language applications
Multiple platforms
Safer execution
Deployment
Removal on registration dependency
Safety – fewer versioning problems
THE END of ‘DLL Hell’
19. Common Language RuntimeMultiple Language Support
What about types?
Common type system (CTS)
Other languages and compilers
Common Language Specification (CLS)
20. Common Language Runtime Compilation
Soruce Code
C++, C#, VB ---> Compiler ---> Assembly
or any .NET Language csc.exe or vbc.exe DLL or EXE
21. Common Language Runtime Assemblies
ParcelTracker.DLL
Metadata
IL Managed code
Resources
22. Common Language Runtime Metadata
Type Information
More complete than IDL / TLB
Automatically bound into assembly
Inseparable
Stored in binary format
Describes every class type
Used by VS.NET IntelliSense™
23. Common Language Runtime Metadata in an Assembly
Type Description
Classes
Base Classes
Implemented Interfaces
Data members
Methods
Assembly Description
Name
Version
Culture
Other assemblies
Security Permissions
Exported Types
24. Common Language Runtime Applications
One or more assemblies
Assemblies resolution
Using metadata
Local (preferred)
Assembly Global Cache
Different applications may use different versions of an assembly
Easier software updates
Easier software removal
25. Common Language Runtime Execution Model
Source Managed Code
VB --->Compiler--> Assembly IL Code |
|
C# --->Compiler--> Assembly IL Code |--> Common --> JIT Complier-->Native Code-->|
| Language Runtime |
C++--->Compiler--> Assembly IL Code | |OS Services
| |
|---------------------------------------Un Managed Componet --------------->|
26. Common Language Runtime DEMO 1: Using the CLR
27. Agenda
Introduction to .NET
The .NET Framework
Common Language Runtime
Building User Interfaces
Data and ADO.NET
Summary
28. Building User InterfacesWindows Forms
Framework for Building Rich Clients
RAD (Rapid Application Development)
Rich interfaces
Easily hooked into Web Services
Rich set of controls
Data aware
ActiveX® Support
Licensing
Accessibility
Printing support
29. Building User InterfacesASP.NET
Logical Evolution of ASP
Control-based, event-driven execution model
Improved performance
Supports multiple languages
Not limited to VARIANT types
More productive
Cleanly encapsulated functionality
30. Building User InterfacesASP.NET Web Forms
Allows clean cut code (non spaghetti)
Code-behind Web Forms
Easier for tools to generate
Code within is compiled then executed
Improved handling of state information
Support for ASP.NET server controls
Data validation
Data bound grids
31. Building User InterfacesWeb Services
Technical definition – “A programmable application component accessible
via standard Web protocols”
Built on SOAP
Expose functionality from Web Sites
Almost like component programming over the Web
Functionality exposed using XML/HTML
Standard Web Services include
Storage.NET Service
Calendar
MSN Passport
32. Building User InterfacesCreating a Web Service
Creating a Web Service
ParcelTracker.asmx
<%@ WebService Language="C#" %>
using System;
using System.Web.Services;
using VBParcelTrackerNS;
public class ParcelTrackerWebService
{
[WebMethod]
public string GetOrderStatus (int orderNumber)
{
//Implementation here!
}
}
33. Building User InterfacesCreating a Web Service Client
Aspx ---> SOAP Proxy Code ---- The Internet -----> Web Service
34. Building User InterfacesDEMO 2: Web Services
35. Agenda
Introduction to .NET
The .NET Framework
Common Language Runtime
Building User Interfaces
Data and ADO.NET
Summary
36. Data and ADO.NETThe Evolution of ADO
New objects (e.g., DataSets)
Great support for XML
Separates connected / disconnected issues
Language neutral data access
Uses same types as CLR
37. Data and ADO.NET
ADO.NET Classes
Data Reader <---- SQL Server|<--- | | |
(Forward Only) | | Data Set Command| Data Set |----> XML
|---->| | |
DataSetCommand
|
|
DataSet
|
|
XML
38. Data and ADO.NET XML Support
Rich XML supporting classes
For reading XML from files
Writing XML from files
Navigation
XSL Transformations
Datasets
39. Data and ADO.NET System.XML
System.XML
XmlTextWriter ----> | | ----> XmlDocument--> Data Document Reader
|<XML>| |
XmlTextReader <---- | | |<---------> Document Naviagator
40. Data and ADO.NET DEMO 3: ADO.NET and XML
41. Agenda
Introduction to .NET
The .NET Framework
Common Language Runtime
Building User Interfaces
Data and ADO.NET
Summary
42. Summary
This presentation introduced the following
The .NET Framework
Common Language Runtime
Web Forms, Web Services and ASP.NET
ADO.NET
XML Support
43. More ResourcesFind It on the Internet
http://msdn.microsoft.com
http://www.microsoft.com/net
http://msdn.microsoft.com/xml
msnews.microsoft.com
microsoft.public.dotnet.general
microsoft.public.dotnet.xml
46. Introduction to .NET The Road to .NET
The Road to .NET
1996 Internet 1 Gen 1997 Internet 2 Gen
---- IE/IIS ----- WIn DNA ----------------> | 2000 Internet 3 Gen
|
|------ .NET ----->
1992 Client/Server |
|
--------Win 32 ---------------------------> |
47. Introduction to .NET .NET: Next-Generation Computing
.NET: Next-Generation Computing
Smart Devices
New User Experience
Web Services
XML-enabled
Rich Infrastructure
