SynapseIndia dotnet module development part 1
- 1. SynapseIndia Dotnet Module Development part 1
- 2. Simplify Development Common Type System Common instance and type definition Enables clean OO programming Classes and interfaces Constructors, properties, methods, events Cross language inheritance Built-in interoperability With COM With native (Win32® style) DLLs
- 3. Everything Is An Object Traditional views of primitive types C++, Java™ : They’re “magic” Smalltalk, Lisp: They’re full-blown objects .NET Framework solution: Value types unifies with no performance cost Deep simplicity throughout system Improved extensibility and reusability New primitive types: Decimal, SQL… Collections, etc., work for all types
- 4. Everything Is An Object Boxing Allocates box, copies value into it Unboxing Checks type of box, copies value out Dim i As Integer = 123Dim i As Integer = 123 Dim o As Object = iDim o As Object = i Dim j As Integer = CInt(o)Dim j As Integer = CInt(o) 123123i o 123123 System.Int32System.Int32 123123j int i = 123;int i = 123; object o = i;object o = i; int j = (int)o;int j = (int)o;
- 5. Robust Environment Automatic lifetime management All objects are garbage collected Exception handling Error handling first class and mandatory Type-safety No buffer overruns, No unsafe casts, Uninitialized variables
- 6. Secure Environment Security designed-in Code access security enforcement Security based on the identity of code Administratively configurable via policy ASP.NET integrated authentication of user Windows identity, Passport® , forms-based, … Cryptography library with XML DSIG support Digital signature for XML (www.w3.org/signature)
- 7. Simplify Deployment And Management Zero-impact install Applications and components can be shared or private Side-by-side execution Multiple versions of the same component can co- exist on a system Assemblies Contain dependency information
- 8. Operating SystemOperating System Common Language RuntimeCommon Language Runtime Base Class LibraryBase Class Library ADO.NET and XMLADO.NET and XML ASP.NETASP.NET Web Forms Web ServicesWeb Forms Web Services Mobile Internet ToolkitMobile Internet Toolkit WindowsWindows FormsForms Common Language SpecificationCommon Language Specification VBVB C++C++ C#C# JScriptJScript J#J# VisualStudio.NETVisualStudio.NET Framework, Languages, And Tools
- 9. Unify Programming Models Windows APIWindows API .NET Framework.NET Framework Consistent API availability regardless ofConsistent API availability regardless of language and programming modellanguage and programming model ASPASP Stateless,Stateless, Code embeddedCode embedded in HTML pagesin HTML pages MFC/ATLMFC/ATL Subclassing,Subclassing, Power,Power, ExpressivenessExpressiveness VB FormsVB Forms RAD,RAD, Composition,Composition, DelegationDelegation
- 10. How Much Simpler? Windows APIWindows API HWND hwndMain = CreateWindowEx(HWND hwndMain = CreateWindowEx( 0, "MainWClass", "Main Window",0, "MainWClass", "Main Window", WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL,WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL, CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT, (HWND)NULL, (HMENU)NULL, hInstance, NULL);(HWND)NULL, (HMENU)NULL, hInstance, NULL); ShowWindow(hwndMain, SW_SHOWDEFAULT);ShowWindow(hwndMain, SW_SHOWDEFAULT); UpdateWindow(hwndMain);UpdateWindow(hwndMain); .NET Framework.NET Framework DimDim formform As NewAs New Form()Form() form.Text = "Main Window"form.Text = "Main Window" form.Show()form.Show()
- 11. Factored And Extensible The Framework is not a “black box” Any .NET class is available for you to extend through inheritance Gives developers much more head room Plug and Play components and subsystems