DOT NET Interview Questions - DotNetSpider

√
First create your class with static members.
Public class ClsStaticClass
End class
Private shared objCustomer as clsCustomer
This ensures that there is actually only one Customer object through out the project.
√
√
Second define a private constructor to your class.
Note: - defining a private constructor to class does not allow a client to create objects directly.
Finally provide a static method to get access to your singleton object.
(A)How do you implement prototype pattern in .NET?
Twist: - How to implement cloning in .NET ? , What is shallow copy and deep copy ?
Cloning is achieved by using ICloneable of the System namespace. It has a “Clone” method
which actually returns the reference of the same copy. Clone method allows a Shallow
copy and not a deep copy. In Shallow copy if you make changes to the cloned object it
actually does change on the main object itself. So how is deep copy achieved, by using
“ISerializable” interface? So what you do is first serialize the object then deserialize back
to a complete new copy. Now any changes to this new copy do not reflect on the original
copy of the object, this is called as Deep copy.
(I)What are the situations you will use a Web Service and Remoting in
projects?
Well “Web services” uses “remoting” concepts internally. But the major difference between
“web service” and “remoting” is that “web service” can be consumed by clients who are
not .NET platform. While remoting you need the client to be .NET compliant. Regarding
the speed issue “Remoting” is faster than “Web Services”. So I think when deciding the
architecture side of choosing between “Web services” and “Remoting” keep the cross
platform issue and the speed issue in mind.
(A)Can you give a practical implementation of FAÇADE patterns?
155