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4.1 Value types

Visual Studio .NET 2003

A value type is either a struct type or an enumeration type. C# provides a set of predefined struct types called the simple types. The simple types are identified through reserved words.

value-type:
struct-type
enum-type
struct-type:
type-name
simple-type
simple-type:
numeric-type
bool
numeric-type:
integral-type
floating-point-type
decimal
integral-type:
sbyte
byte
short
ushort
int
uint
long
ulong
char
floating-point-type:
float
double
enum-type:
type-name

A variable of a value type always contains a value of that type. Unlike reference types, it is not possible for a value of a value type to be null or to reference an object of a more derived type.

Assignment to a variable of a value type creates a copy of the value being assigned. This differs from assignment to a variable of a reference type, which copies the reference but not the object identified by the reference.

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