| Questions |
| What is class,object,interface,structure,enum? |
| What is value type and reference type? |
| What is inheritance and polymorphism? |
| What are properties and indexer? |
| How to make a property,indexer readonly? |
| What is overloading and overriding? |
| Difference between Interface,abstract class, sealed class, static class and partial class? |
| how to implement singelton in C# & its uses? |
| What is event & delegates and its difference? |
| What is difference between overriding and shadowing? |
| What are the access allowed for compilation units(namespace),class and structs and what are its default access? |
| What’s difference between Association, Aggregation and Inheritance relationships? |
| What are Generics? |
| What are iterators? |
| What are nullable types? Is Nullable |
| How to assign default value to nullable types? Did nested nullable types are allowed |
| What is covariance and contravariance? Did Delegate and method overriding support these? |
| What is anonymous method? |
| Did a generic class can be inherited by a normal class? |
| Difference between dispose and destructor? |
| What are virtual methods? How are they used? |
| What is the use of base,new,virtual and override keywords? |
| What is the difference between const and readonly variables? |
| use of operator overloading of implicit & explicit operators? |
| Is there any way to access private memebers of an object from another object? (Yes) |
| What is the difference between string and StringBuilder? |
| what is the difference between int and Int32? |
| When static constructor is invoked? |
| When compiler adds a default constructor to a class? |
| what is the difference between passing a value object by reference and a reference object by value? |
| what is output parameter and parameter array? |
| How to handle exceptions? |
| How to throw an caught exception from cath block? |
| Did it possible to cast a generic type of derived class to generic type of base class? |
| Is Inheritance possible in Static class? |
| What is marker interface? |
| Is it possible to implement an interface to a structure? Is it possible to extend a struct? Is it possible to inherit a class to struct? |
| What is the use of "default" and "Using" keyword? |
| Difference between direct type casting and using "as" keyword? |
| Use of Checked and UnChecked operators? |
| What is short circuit logical evaluation? |
الخميس، 25 ديسمبر 2008
OOP Interview Questions
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