.Net Assemblies
- 1. .Net AssembliesBy: Muhammad Kamran RafiKami_khan0597@yahoo.com
- 2. Fundamental unit of deployment, version control, reuse, security permission for a .net based application.Logical unit of distributionTake form of .dll or .exe file Building block of .Net based ApplicationCan consist of Single File or Multiple Files called modulesA module may be generated from different languages..Net Assembly
- 3. Assemblies are self-describing. Version dependencies are recorded inside assembly manifest. Assemblies can be loaded side-by-side. Installation can be as easy as copying the files that belong to an assembly.Assemblies can be private or shared.Features of Assemblies
- 4. Assembly MetadataType MetadataCIL CodeResourcesAssembly Structure
- 5. Assembly NameVersion InformationCultureStrong Name InformationList of files that make up an assemblyType Reference InformationReferenced Assembly InformationAssembly Metadata/Manifest
- 6. Contains information about the types declared and used in assembly.Classes, interfaces, structs, events , indexers that are used.All information about types i.e. methods, attributes, propertied.Type Metadata
- 7. JIT complier gets everything it needs from compilerUsed in garbage collection Process.Net provides classes to read metadata (Reflection API)Features of Metadata
- 8. Assembly Contents pictorial view
- 9. Code emitted by an appropriate .net language compiler e.g. csc (C# Compiler).MSIL is shipped in portable executable (PE) units.Later JIT compiled to Native Code.Full IL code can be compiled to Native Code using NGEN.exeCIL/MSIL Code
- 10. Non-executable data that is part of application e.g. images, sounds, videos etc.Resources
- 11. .NET program execution model (revisited)
- 12. Private Assembly (placed in application’s execution directory)Shared Assembly (placed in GAC)Types of Assembly
- 13. Particular location on system that contains all global assemblies
- 14. Located in OS directory
- 15. In Windows XP located atC:\Windows\assemblyIt is location where .Net installs its FCL
- 16. Shared by all .Net apps on that machine
- 17. Multiple versions of an assembly can live side by sideGAC
- 19. ILDASM
- 20. ILDASM
- 21. ILDASM
Editor's Notes
- #17: Go to File > Open > Select your Assembly File and Open