can we call a method of a class without creating object ? why

Question

4.00/5 (2 votes)

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C#

class Program 
{ 
    static void Main(string[] args) 
    { 
        new ShoppingCart().Process(); 
    } 
} 
 
class ShoppingCart 
{ 
    public void Process() 
    { 
        int magicDiscount = 5; 
        // ... 
    }
}

the above code we are calling the method

new ShoppingCart().Process();" explian about this"

Posted 6-Feb-10 21:06pm

jameschowdary

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Richard MacCutchan · Answer 1 · 2010-02-06T22:24:00

Solution 2

If you make a method static then it is a Class method and can be called on the class, e.g. Int32.TryParse(). All other methods are instance types and can only be called via an object reference.

Posted 6-Feb-10 22:24pm

Richard MacCutchan

Christian Graus · Answer 2 · 2010-02-06T23:01:00

Solution 3

The Process method should probably be static. But, as someone else said, you need to buy a book on OO, rather than asking us.

Posted 6-Feb-10 23:01pm

Christian Graus

AspDotNetDev · Answer 3 · 2010-02-07T00:06:00

Solution 4

You are creating an instance of the ShoppingCart class and then calling the Process method on that instance. If you had used the static modifier, you would not have had to create the instance of the ShoppingCart class.

Posted 7-Feb-10 0:06am

AspDotNetDev

4277480 · Answer 4 · 2010-02-06T21:20:00

Solution 1

No. Basics of OO[^]

Posted 6-Feb-10 21:20pm

4277480

AR@JR · Answer 5 · 2010-02-07T18:00:00

Solution 5

just change 'public void Process()' to 'public static void Process()' and you can do 'new ShoppingCart().Process();' kind of method calls. a static method presists in memory and needs only its contaier class name to call it.

Posted 7-Feb-10 18:00pm

AR@JR