Classe declaration

Question

HiAll Can anyone tell me that which is a better approach in C#.net: -Create static class and call its properties and methods directly -Create public class and first instantiate the object then call them? Thanks in Advance

Dorababu Meka · Answer

What you want to do exactly can you please elaborate the question

Asim Saeed · Answer

Now the confusion has cleared :) Thanks to all

knights · Answer

That depends on how you application is designed. If you are looking to call methods in an application from any where in the program.Then Static class is the option. Otherwise if the desin requirement is that you need a class in a seprate file and your main application will be creating different objects OBJ1OBJ2 etc and you are looking to process each object seprately on different methods then you need to have a public class. Perfomance wise read the following courtesy of [http://www.velocityreviews.com/forums/t117353-advantages-of-static-vs-instance-methods.html] The short answer is that static functions are faster. The reason why static functions are faster is because of the way programming languages implement objects. For example suppose class A has function void f() that increments a variable of class A called counter. When the compiler processes class A is it creates the code of function f() only once; there is no need to create this code for each instance. Therefore when the program runs there is only one copy of f() in the memory. When the programmer invokes x.f() and y.f() how does the code know which copy of f() to run? Well since there is only one f() the same function is run all the time. But you wonder how does the code know which counter to increase. What you do not see is that the function f() actually takes an additional parameter called this. The this pointer tells f() on which instance it should operate. The this pointer is added by the compiler by default. Now in this example the this pointer cannot be resolved at compile time. For example the program can have an if-statement such that the address of x can be one of several options. In other words the compiler does not know where instance x will sit in the memory. Hence the compiler will have to resolve the address in run time. This takes time. With static functions on the other hand no this pointer is passed because the function can be called without an instance. Even if there is an instance x of class A and you call the static function g() of that instance as in x.g() it will be equivalent to A.g() because g() is not allowed to use any instance variables (only static variables of the class). In other words there is no resolution process taking place at run time. Hence static methods are faster and should be chosen when possible.

Dorababu Meka · Answer

Then better go for Public class because this is always good to re-use the objects if you are not going to use the variables then go for Static

Asim Saeed · Answer

Actually i have to create a class in a separate file and use it in the codeso i am thinking here what would be the best approach to create this class as mentioned abovealso i am thinking which approach is more effective as far as performance is concerned. Thanks