Constant key:
1. Const is by default static but cannot mark as static.
For
exp: public
static const int _strConst = 10; //error
//constant cannot mark static.
public const int _strConst =
10; // good
public class classConst
{
public const int _strConst =
1;
static void Main(string[]
args)
{}
}
2. Const key values must be initializing at the
declaration time only.
3. Const key values is initializing at compile
time.
4. Const Key values cannot change at the Run
time.
Readonly key:
1. In Readonly key marked as static.
For
exp: public static readonly int _strReadOnly ;// good
public
readonly int
_strReadOnly ;// good
public
readonly int
_strReadOnly=10 ;// good
public class ClassReadOnly
{
public static readonly int _strReadOnly ;
public
ConstReadOnly()
{
_strReadOnly = 10;
}
static void Main(string[]
args)
{}
}
2. Readonly key is initializing maybe at the
declaration time, in the constructor, in the web config.
3. Readonly values is initializing at Run time.
4. Readonly values can be changed at the Run
time.
