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Home >> Interview Question >> .NET Framework >> Post New Question Subscribe to Interview Questions

Root of the .NET type hierarchy?

Posted By :Narayanan     Posted Date :August 31, 2011    Points :40   Category :.NET Framework 
System.Object

You can also find related Interview Question to Root of the .NET type hierarchy?  below: 

Difference between type constructor and instance constructor? What is static constructor, when it will be fired? And what is its use?

  
(Class constructor method is also known as type constructor or type initializer)
Instance constructor is executed when a new instance of type is created and the class constructor is executed after the type is loaded and before any one of the type members is accessed. (It will get executed only 1st time, when we call any static methods/fields in the same class.) Class constructors are used for static field initialization. Only one class constructor per type is permitted, and it cannot use the vararg (variable argument) calling convention. (More...)

What is type safe?

  
Type safety is about increasing the opportunities for the compiler to detect your coding errors. If you use interfaces instead of delegates the compiler will have more opportunities to detect your coding errors. (More...)

What is type system unification?

  
The goal of type system unification is to bridge the gap between value types and reference types that exists in most languages. For example, a Stack class can provide Push and Pop methods that take and return object values.

public class Stack
{
public object Pop() {...}
public void Push(object o) {...}
}
Because C# has a unified type system, the Stack class can be used with elements of any type, including value types like int. (More...)

What are the requirements to create a CLR based user-defined type?

  
CLR must be enabled for the instance and A class created with a CLR-compatible language. (More...)

What is return type of Executenonquery() ?

  
int will be returned when you call ExecuteNonQuery() in ADO.NET (More...)

What is the common type system (CTS)?

  
The common type system is a rich type system, built into the Common Language Runtime, that supports the types and operations found in most programming languages. The common type system supports the complete implementation of a wide range of programming languages. (More...)

If you are using C language to implement the heterogeneous linked list, what pointer type will you use?

  
The heterogeneous linked list contains different data types in its nodes and we need a link, pointer to connect them. It is not possible to use ordinary pointers for this. So we go for void pointer. Void pointer is capable of storing pointer to any type as it is a generic pointer type. (More...)

What is an incomplete type?

  
Incomplete types refers to pointers in which there is non availability of the implementation of the referenced location or it points to some location whose value is not available for modification.
Example:
int *i=0x400 // i points to address 400
*i=0; //set the value of memory location pointed by i.
Incomplete types are otherwise called uninitialized pointers. (More...)

What is an Entity type?

  
It is a collection (set) of entities that have same attributes. (More...)

What is an Extension of entity type?

  
The collections of entities of a particular entity type are grouped together into an entity set. (More...)

What is Relationship type?

  
Relationship type defines a set of associations or a relationship set among a given set of entity types. (More...)

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