Value and Reference types

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What is the difference between Value and Reference Types and its Significant in programming ? I'm totally new to object oriented programming paradigm ! An explanation with an example would be much helpful....

Thanks in Advance !!

Posted 17-Dec-11 16:21pm

Kumar Bhandari

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When a lot of people have explained that in very detailed manner why should we repeat those words. So spend some time and read these resources :

http://msdn.microsoft.com/en-us/library/0f66670z%28v=vs.71%29.aspx[^]

http://www.developerfusion.com/article/4697/parameter-passing-in-c/[^]

http://www.albahari.com/valuevsreftypes.aspx[^]

Hope it helps.

Posted 18-Dec-11 23:57pm

Amir Mahfoozi

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Ganesan Senthilvel · Accepted Answer · 2011-12-17T17:01:00

Numeric data types such as integers, floats, etc, boolean, enumerations and user defined structures are value types.

Classes, interfaces and delegates are reference types.

An instance of the reference type, called an object, is allocated and managed on the Garbage Collection heap, and all reads, writes, and sharing of it are performed through a reference (i.e., a pointer indirection).

A value type instance, called a value, on the other hand, is allocated inline as a sequence of bytes, the location of which is based on the scope in which it is defined

Balaji_Reddy · Accepted Answer · 2011-12-18T23:46:00

hi dude,

Basically data types can be classified into two basic types.

1)Value type
2)Reference type.

value types directly holds its value but reference type not.

int myVar = 10;

when the above statement executes, CLR allocates a stack with address "myVar". The stack "myVar" will hold your value 10.

String myvar ="Hello world";

When the above code executes, CLR will allocates a stack with address "myvar" but it will not directly holds the value("hello world"). instead of tis, CLR will store the actual value("hello world") in heap and stores the heap address in the stack "myVar".

Value and Reference types

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