Thursday, September 15, 2011

.NET interview questions: - How to clean unmanaged objects and also maintain its performance?

In order to clean unmanaged objects we need to follow the below steps:-

• Implement IDisposable interface and implement the dispose function.

• In Dispose function call the “GC.SuppressFinalize” method.

• At the client side ensure that the “Dispose” function is called when the
object is no more required.

Below goes the code, this is also called as “Finalize and Dispose pattern”. This
ensures that your objects are created in Generation 0 rather than Generation 1.
“GC.SuppressFinalize” tells the garbage collector to not worry about destructor
and destroy the objects in the first call itself.

class clsMyClass : IDisposable
// In case the client forgets to call
// Dispose , destructor will be invoked for
protected virtual void Dispose(bool disposing)
if (disposing)
// Free managed objects.
// Free unmanaged objects

public void Dispose()
// Ensure that the destructor is not called

Also view following video on estimations of software projects using Function Point Analysis: -

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