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What is the Difference between value and reference type?
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Answer Posted / saransony
C# provides a set of different data types. The data types
in C# are divided into two categories – Value Types and
Reference Types. Although there is a third data type –
pointers, Pointers can only be used in unsafe code.
A variable that is a value type, stores the data, while a
variable of a reference type stores a reference to the
data. Both Value Types and Reference Types have one
interesting thing in common – they both derive from System.
Object. This is interesting, because most other object-
oriented languages do not have this behavior.
Value Types
The value of value types is stored on the managed stack,
and can be used directly. This means that the value is
stored, and not a reference to the value. This also means
that each value type has its own copy of the data.
Reference Types on the other hand has a reference to the
data, and several variables can reference the same data.
Reference Types
In contrast to value types, the value of a reference types
is allocated on the heap. Another name for a reference
type, that you might be more familiar with, is an object.
Reference types stores the reference to the data, unlike
value types, that stores the value.
Links- http://www.programmersheaven.com/2/FAQ-CSHARP-
ValueRef-ValueType-Differences
http://msdn.microsoft.com/msdnmag/issues/1200/dotnet/
http://msdn2.microsoft.com/en-
us/library/2hf02550.aspx
http://dotnetsutra.blogspot.com/2007/10/difference-between-
value-type-and.html
| Is This Answer Correct ? | 22 Yes | 7 No |
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