SOAP (Simple Object Access Protocol) is a simple XML-based messaging protocol to let applications exchange information over HTTP. It defines a set of rules for structuring messages that can be used for simple one-way messaging but is particularly useful for performing RPC-style (Remote Procedure Call) request-response dialogues. It is not… Continue reading
Languages typically do not require a class to declare inheritance from Object because the inheritance is implicit. Because all classes in the .NET Framework are derived from Object, every method defined in the Object class is available in all objects in the system. Derived classes can and do override some… Continue reading
Method Overloading One of the key features of object-oriented programming is polymorphism. Polymorphism permits objects to behave in different ways according to the manner in which they are used. One part of polymorphism is the ability for a method to behave differently according to the types and number of parameters… Continue reading
C# 4.0 introduces optional parameters to the language for methods, constructors, indexers and delegates. Optional arguments can be defined within a member’s signature but omitted from calls to that member, in which case default values are used instead. Often your source code will include several overloaded versions of one or… Continue reading
A new feature of C# 3.0 is the ability to create anonymous types. These interesting classes are defined for temporary use within class members. They allow the convenient encapsulation of read-only properties without the need to code a complete class. What is an Anonymous Type? Usually well-defined classes encapsulate the… Continue reading
True or False: A Web service can only be written in .NET? False What does WSDL stand for? Web Services Description Language Where on the Internet would you look for Web services? http://www.uddi.org Which property on a Combo Box do you set with a column name, prior to setting the… Continue reading
Describe the role of inetinfo.exe, aspnet_isapi.dll and aspnet_wp.exe in the page loading process. inetinfo.exe is the Microsoft IIS server running, handling ASP. NET requests among other things. When an ASP. NET request is received (usually a file with .aspx extension), the ISAPI filter aspnet_isapi.dll takes care of it by passing… Continue reading
I have used a lot of free .NET libraries, some from Microsoft itself! Which ones have you found the most useful? Package managers for external libraries NuGet (formerly known as NuPack) – Microsoft (developer-focused package management system for the .NET platform intent on simplifying the process of incorporating third party… Continue reading
Boxing is implicit conversion of ValueTypes to Reference Types (Object). Boxing a value type packages it inside an instance of the Object reference type. This allows the value type to be stored on the garbage collected heap. Boxing is conversion from value type to object(reference) type. Actually the copy of… Continue reading
The .NET Framework extends the COM model for re-usability by adding implementation inheritance. Managed types can derive directly or indirectly from a COM coclass; more specifically, they can derive from the runtime callable wrapper generated by the runtime. The derived type can expose all the method and properties of the… Continue reading