VB.Net-Introduction.ppt
- 1. VB.Net
- 2. Introduction • Console Application • Windows Application • Mobile Application & • Web Application Types of application
- 3. Introduction • Anywhere • Anytime & • On any device Example: Updates of a football match can be viewed on PDA or mobile phone using Web Application or Web services in VB.net Objective
- 4. • .NET Framework uses XML to transfer data • XML data will be in text-based • It can be understood by application running on various platforms • XML enables your application to access data anytime, anywhere and on any device Introduction
- 5. Components • Common Language Runtime (CLR) • .NET Framework class library
- 6. Common Language Runtime (CLR) • Exception Handling • Security • Debugging & • Version support Core Functions
- 7. • VB • C# • C++ with managed extension Common Language Runtime (CLR) Supporting Languages
- 8. • Host multiple languages • Offers common set of tools • Ensuring interoperability between the codes • Can execute programs written in any languages that it supports Common Language Runtime (CLR) Manages Extension
- 9. • Managed Code code developed with language compiler that targets the CLR. • UnManaged code code developed without considering the convention and requirements of the CLR. Common Language Runtime (CLR)
- 10. • Translates it into MSIL/IL • Produces Metadata during compiling – Description of the program such as classes & interfaces, dependences and the version of the compunents used in the program • IL and metadata are linked in an assembly (Contd…) Common Language Runtime (CLR) Managed Code Execution Process
- 11. • Compiler .EXE or .DLL file – .EXE starts the program – .DLL reusable components to perform common task • During execution Common Language Runtime (CLR) Code and all the relevant information Loads the code into memory Class Library Class Loader During .EXE or .DLL file executes (Contd…)
- 12. • Just-In-Time (JIT) compiler IL Managed native code • Code is checked for type safety • The native code is sent to the .NET runtime manager. • Manager executes the code Common Language Runtime (CLR) CLR supplies JIT compiler
- 13. .NET Framework Class Library • Collection of reusable classes • Common Language Specification(CLS) • CLS Languages are – C# – VB – Jscript – VC++ with managed extensions – VJ++
- 14. • VB.net is built on the top of the framework • Vb.net can use entire set of classes provided by .net framework .NET Framework Class Library .NET Framework CLS-compliant Languages Common Language Specifications .NET Runtime Hosts Common Languages Runtime .NET Frame Class Library
- 15. Namespaces • Used to create logical groups of related classes and interfaces • Can by used by any languages • Avoid any naming conflicts between classes that have the same names. • Import the namespace into an application • Dot(.) is used As the delimiter between classes and namespaces. Example System.console .NET Framework Class Library
- 16. Assemblies • Single deployable unit • Information about the implementation of classes, structures and interfaces. • Information meta data • Includes the name and version number of the assembly • CLR assemblies and metadata .NET Framework Class Library Info to execute