FAQ for .NET

How many types of memories are there in .Net? There are two types of memories in .Net Stack memory Heap Memory What is the application domain? ASP.NET introduces a concept of application domain or AppDomain which is like a lightweight process that acts like both container and boundary. The .NET run-time uses the AppDomain as … Read more

What is the Diamond of Death? It is an ambiguity that arises due to multiple inheritances in C#. Two classes B and C inherit from A, and D inherits from both B and C but doesn’t override the method defined in A. The Diamond Problem arises when class B or C has overridden the method … Read more

What is MIME? MIME stands for Multipurpose Internet Mail Extension. It is an add-on or a supplementary protocol which allows non-ASCII data to be sent through SMTP. It facilitates the exchange of data files on the internet and was proposed by Bell Communications in 1991. Which adapter should be used to get the data from … Read more

What are ASP.NET security controls? <asp: Login>: Provides a login capability that enables the users to enter their credentials. <asp: LoginName>: Allows you to display the name of the logged-in user. <asp: LoginStatus>:Displays if the user is authenticated or not. <asp: LoginView>: provides various login views depending on the template that has been selected. <asp: … Read more

What are MDI and SDI? MDI( Multiple Document Interface): An MDI lets you open multiple windows, it will have one parent window and as many child windows. The components are shared from the parent window like menubar, toolbar, etc. SDI( Single Document Interface): It opens each document in a separate window. Each window has its … Read more

Explain the difference between the Stack and the Heap. in the Stack are stored value types (types inherited from System.ValueType), and in the Heap are stored reference types (types inherited from System.Object). We can say the Stack is responsible for keeping track of what is actually executing and where each executing thread is (each thread … Read more

What are differences between function and stored procedure in .Net programming language? The difference between function and stored procedure: Function returns only one value but procedure can return one or more than one value. Function can be used in select statements but procedure cannot be used. Function has only input parameters while Procedure can have … Read more

What are the advantages of Web Services? The advantages of Web Services are: i. It is simple to build and supported by a variety of platforms. ii. It can extend its interface and add new methods without affecting the client’s operations. iii. It is stateless and firewall-friendly. What is Garbage collection? Garbage collection is used … Read more

How to retrieve user name in case of Window Authentication? System.Environment.UserName What is the difference between Hash table and Array list?What is the difference between Hash table and Array list? Hash table stores data in the form of value pair and name while Array list stores only values. You need to pass name to access … Read more

What is an EXE and a DLL? Exe and DLLs are Assembly executable modules. Exe is an executable file. This runs the application for which it is designed. An Exe is generated when we build an application. Hence, the assemblies are loaded directly when we run an Exe. However, an Exe cannot be shared with the … Read more