Constant & Read Only

 

	Constant	Read Only
1	Assign meaningful constant values as part of the initialization process.	Set at run time. But cannot be modified after the constructor has executed.
2	Can only be used for primitive types.	Run-time constants can be of any type
3	The IL generated for a compile-time constant contains the value, not the symbol. The value is already "burned in" at compile time.	The IL generated when you reference a readonly constant reference the readonly variable, not the value.
4	Class Level Scope	Capable of storing different values for each instance of a class type.

 

Decision:

 

Ø  You can use const values as the parameters to attribute constructors; you cannot use readonly values, or variables.

So, when you define objects to use when constructing attributes, those values used for attribute parameters must be const; readonly doesn't work.

 

 

 

Thanks & Regards,

Arun Manglick

SMTS || Microsoft Technology Practice || Bridgestone - Tyre Link || Persistent Systems || 3023-6258

 

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