"Difference between value type and reference type "

• Value Type:
  Value Types derive from System.ValueType, which is derived from System.Object.
  In other words, you can say that a data type is a value type that holds data value within its own memory space.
  For example, consider the following integer variable
  int  a=80;
  The system stores 10 in the memory allocated for the variable 'a'.
  
  
  
  
  The following data types are all of the value types:
  •  bool
  • byte
  •  char
  •  decimal
  •  double
  •  enum
  •  float
  •  int
  •  long
  •  sbyte
  • short
  •  struct
  •  uint
  •  ulong
  •  ushort
  Reference Type:
  ReferenceType doesn’t store the value directly. It Stores the address where the value is stored. In other words, you can say that reference type contains a pointer to another memory location that points the address of any variable.