Short C# Interview Questions.
1. What’s the .NET datatype that allows the retrieval of data by a unique key? Ans. HashTable. 2. What’s class SortedList underneath? Ans. A... Read more »
‘C# Interview Questions’ - KyaPoocha.com
What’s a satellite assembly ?
When you write a multilingual or multi-cultural application in .NET, and want to distribute the core application separately from the localized modules, the localized... Read more »
How’s the DLL Hell problem solved in .NET ?
Assembly versioning allows the application to specify not only the library it needs to run (which was available under Win32), but also the version of the assembly. Read more »
What’s a multicast delegate ?
It’s a delegate that points to and eventually fires off several methods. Read more »
What’s a delegate ?
A delegate object encapsulates a reference to a method. In C++ they were referred to as function pointers. Read more »
What’s the C# equivalent of C++ catch (…), which was a catch-all statement for any possible exception ?
A catch block that catches the exception of type System.Exception. You can also omit the parameter data type in this case and just write catch {}. Read more »
What’s the difference between the System.Array.CopyTo() and System.Array.Clone() ?
The first one performs a deep copy of the array, the second one is shallow. Read more »
What’s the advantage of using System.Text.StringBuilder over System.String ?
StringBuilder is more efficient in the cases, where a lot of manipulation is done to the text. Strings are immutable, so each time it’s being operated on, a new... Read more »
What’s the difference between System.String and System.StringBuilder classes ?
System.String is immutable; System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations can be performed. Read more »
What’s the difference between an interface and abstract class ?
In the interface all methods must be abstract; in the abstract class some methods can be concrete. In the interface no accessibility modifiers are allowed, which... Read more »
Why can’t you specify the accessibility modifier for methods inside the interface ?
They all must be public. Therefore, to prevent you from getting the false impression that you have any freedom of choice, you are not allowed to specify any accessibility,... Read more »
What’s an interface class ?
It’s an abstract class with public abstract methods all of which must be implemented in the inherited classes. Read more »
What’s an abstract class ?
A class that cannot be instantiated. A concept in C++ known as pure virtual method. A class that must be inherited and have the methods over-ridden. Essentially,... Read more »
How’s method overriding different from overloading ?
When overriding, you change the method behavior for a derived class. Overloading simply involves having a method with the same name within the class. Read more »