Download Dot.Net - the first glance.

.Net – The First Glance
What Is .Net, Why Use .Net
The Business Challenges
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Expose legacy data & services
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Connect business information systems
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My inventory management  your ordering
system
Leverage other services in the solution
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Stocks info, marketing databases etc.
Vacation you booked on my site in your Outlook
calendar
Web based components, subscription model
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Old component-DLL  New component-Web svc.
The Developer Challenges
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OS/Language dependence
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Distribution:
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CD vs. Download,1 GB distribution vs. install on
demand
Stability and Maintenance
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VB on Solaris ?,MFC in Linux,<your app> on
PalmOS
DLL Hell,Upgrade pains
Access violations
Security
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Developer: application rights
IT: security policy
.Net promise
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Common Language Runtime – many
platforms
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Assemblies
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C++,C#,VB
Memory management & security
Self contained - no more DLLs
Side by side deployment
Web services
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Web based components
Expose and interconnect existing systems & data
.NET My Services – global roaming profile
.NET World
.NET Solutions
Servers: SQL,
BizTalk, IIS
.NET My Services
Web services
Class library - .Net framework
Runtime
OS
3d party Web
services
Solutions Using.NET
Framework
Hosts:
Languages:
Windows
IIS
Console
Cell phone
C#
VB.NET
Perl.NET
Managed C++
Exploring the framework
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Collections,Threads
Streams, I/O,TCP/IP,MSMQ,
WinForms,ASP.NET,GDI+
XML,Serialization,Remoting,SOAP
Cryptography,Security
ADO.NET
CodeDOM,RegEx,Resources
Reflection,COM/Interop
CLR – Common Language
Runtime
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Common type system and language spec
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Value , reference, sizeof
Method invocations, exceptions
Garbage collection
JIT Compiler ( JVM -> native code)
Security
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Code access
Identity
Roles Based
CLR continued
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Threading
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Exceptions
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Expose OS facilities
Use OS facilities
Debugging & profiling
Assemblies
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Versioning
Overrides
Security
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Requirements
Signing
Deployment
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Xcopy
WinInstaller
Downloads
C#
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C++
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- multiple inheritance & templates
+ interface inheritance (like Java)
+ garbage collection
+ some syntactic sugar
Everything is an object (string too!)
Delegates & events
Attributes
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Comments that survive compilation
Metadata that might be used by other tools
WinForms
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Used to build windows rich clients
Layout in the code (Java like) + resources
Data binding
Custom controls
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Inherited
Custom
User (composite)
ASP.Net
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Web Forms:
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Codebehind (Separate UI & code)
Web page is like a form (with a class
behind)
Server common & custom controls –
generate html
Web-Farm session state
Caching
ADO.Net
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Fully XML based
Recordset is dead:
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DataSet – fully disconnected very powerful
snapshot with relation capabilities. Uses
DataAdapter to read & write.
DataReader = fire hose recordset:
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Read only forward only db data stream.
Providers
SQL.NET & ODBC.NET
Remoting – RPC
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Marshalling
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Channels: SOAP-HTTP, binary-TCP
Proxies/stubs
Lifetime management by leasing
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Lease manager asks clients when the lease
expires
Web Services
Technology behind Web
services
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SOAP – OS & transport agnostic RPC
UDDI – discovery services (yellow
pages)
XML
HTTP – Current transport for SOAP
Web service properties
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Stateless
Talks in SOAP – XML
WEB based components
Enterprise servers
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SQL 2000
Mobile Information Server
SharePoint – document sharing & mgmt
Commerce server
BizTalk – business process integration
server.
Migration path
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COM support
Managed C++
Visual Studio 7 still support MFC & ATL
What can be useful for XLTEK
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Compact & embedded platforms (mobility)
WinForms or ASP.NET for client side.
Web service model for integration with other
hospital IT services.
.Net My Services for identity management
and other integrations.
C# or managed C++ => stability & clarity.
Resources
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www.microsoft.com/.net
http://www.gotdotnet.com/
http://www.ondotnet.com/dotnet/